356 19 6MB
English Pages 61 [65] Year 1921
Original fro
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HARVARD COLLEGE LIBRARY
HARVARD
UNIVERSITY
o
THE
GENERAL
THEORY
OF
NOTATIONAL
RELATIVITY
—_—eee e
by Henry
M.
Sheffer,
Ph.
D.
Department of Philosophy, Harvard
University
CAMBRIDGE, 1921
Google
MASS.
S50
.|
NG/ 81921
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]
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———— S——————————————
PREFACE The following pages present,
in mathematical logio. In a volume entitled
writer hopes to publish which Every
then
may be Puture
aprlied
problems
in
Analytic
the
to
the
logic,
presented,
solution
of
mathemsties,
Knowledge,
time
to
Society.
& number
and
Society,
uperpostulates:
Deductive Systeus", (3)
™Deductive
(47
"The
in
»
Systems
p. 269;
™dutually
(6)
Prime
"Principia
1919,
Anericasn
graph
pupers
We
refer
of
Deductive
read
in
uarch,
1910,
Introduction
ib., November,
Elimination
1ib., Merch, 1916,
of
pp.
and
the
abstract:
of
1913,
Postulste
Kodular
Thie
Systems
Association.
systems,
to
We
the
Science
of
Theory;
I.
Finite
Postulates”,
Kerch,
read
quote
it is well known,
the
with
p. £65;
p. 76;
ib.,
was
to
Bulletin of the
Philosophical
paper
before
particular
Existence
Postulates",
Ans=lytica",
187-8.
Philcsophical
"Deductive
is
fundamental
Menzenlehre.
Cese", ib., February, 1915, p. 220;
Merch,
of
reference to the Algebra of Logic",
(5) 287.
the
through &period ot more
time,
following abstracts: (1) "Total Determinations
American Matheus tical
.
which
to the gradusi formulation of this method,
from
Mathematical
special
& new method
churacterized as & sort of Prolegomenon to Postulate Set--is develored in detail, and
than twelve years, Americal
in outline,
in the neur TE?'mr"e“_K ‘this method--
Some of the ideas which led,
were
2
1916,
Review,
before the
the
first
para-
may be determined
by mesns of postulate sets in various ways. Euclidean geometry, for example, is determined by the widely different postulate sets These distinct
of Zilbert, of determinations
Veblen, are all
and of Huntington. 'equivalent?--any two
of the postulste sets are uniquely intertrunslatable. Mey there not be, then, & set of 'superpostulates', of which
Hilbert's, Veblen's, Huntington's, and other vostulate sets are special cases? There is. And,:as a matter of fact, the 'invarient' of these postuluate sets turne out to be of an extraordinsrily simple character".
Cambridge,
April,
Moss.
1921.
Google
INTRODUCTION
3
SYSTEMS
Ordinery euclidean three dimensional geometry 'given' in various waye. In particular, it may be
may be 'given'--
by
the use of "logical principles"--in terms of: 1. The two undefined euclideun-geometric notions, class of solid srheres, and sphere-inclusion; an 2. A smll number of unproved euclidean-geometric ropositions,
and
the
two
each
statable
undefined
notions
By means of "logic",
entirely
in
in 1.
terms
We
shall
spheres,
call
the
of the
two
undefined
sphere-inclusion],
the set of unproved assunptions. By the
the
notions,
only
those
euclidesnbe proved.
[clsass
Huntingtonlan
of
solid
language,
and
propositions in 2., the Huntingtonmian system of euclidean geometry in terms
Huntingtonian language, we propositions
assumptions.
notions--
all the 2.--can
8hall
mean the
Huntingtonian sseumptl_fle'&oneogether with the set &nd
"logio"
all eucli dean-geometric
other than those in 1 can be defined, and ometric propositions-~other than those in
fen\mtington]
of
‘EogicaITy"
Set oF
deducible
of all those from
these
SYSTEM FUNCTIONS Russell has introduced the important generalization of the concept of proposition to that of propositionsl function. We find it useful to coin anslogous terms for certain analogous generalizations. When, in the current literature, the relation "sphere-
inclusion™
is repluced by R, we have no right to oall k &
relation.
R
X,
call
Similarly, we
"golid
must
spheres"
inclusion”
becomes
the
"language
(X,
that the
R]
we
is,
is
and
shaild
be
celled,
a
relational
function.
when the class of "solid spheres" Is replaced by is
K a dlass is
replaced
replaced
R,
Hduntingtonian
function"
therefore
have
by
is
called
propositionsl
the
function. by
K,
the
lsgfga%e
and
the
class
we
RJ.
by
base.
The
assumgtions
may
ca.
e
the name
of
"sphere-
language
(K,
replaced
Huntingtonian
sssml'ff—_m—p ona ctTons. However,
the
relution
function
Huntingtonian that
the
Huntingtonlan
conveniently
functions
When
the
ifle
name
set
of
the
set
nropositions
of
that
we
have
called
Become
now
Huntingtonian
"sssumptional
"the
base.
propositions
tions" is converiently replaced by the name postulates.
ean geometry
name
system
of
funo-
fhe
euclid-
in terms of the Huntingtonian language" tecomes
propositional
Google
functions
that
we
shull
call
"the
Huntingtonisn system funotion in terms of the Euntingtohian
base
(K,
DOUBLE
R]".
Tootnote.
TERMINOLOGY
If we
are
to
avoid
Cf.
Keyser,
fallacious
distinguish between the two sets of system and in gystem function. The
class
Striking
examples
of
the
regerd of this distinction are Einstein's "generalized theory are valid only for of the Zinsteinian steinian
s-}Emema
Einsteinisn In
or,
system
the
results
terms
following
pages
supnosed terms of
with eystem functions. GRAFS are
Although,
either
function
"
assumptional
"
system function
[=base]
function
fdpostulate]
resulting
from
thaul
or
a
dis-
found in many expositions of of relativity". Results that
interpretations are
va
of
a particular
we
shall
or
of the a
be
of snalytic
inconclusive
Ein-
Einsteinian
concerned
or
terms the
"particular
to hold necessurily for "any any Einsteinian language™.
for purposes
irrelevant
always
relationel function language function
confusion
from
in
language” are ian syetem in
class
"the Einsteinian sy_;um function in base" are suppose 0 hold also for
derTveble
base;
we must
1 "
N
system
functions"]
concepts involved in sete of concepts sre:
"
assumption
various
reasoning,
"
relation language
"doctrinal
proof,
both,
Einstein-
exclusively
grafic methods
yet,
for
pur-
poses of exposition, they may well In the following discussion we grafic devices, and shall develop, of "deductive analytic geometry".
be indispenezble. sh&ll employ various on tne grefic side, & sort For the eimrlest case of
volving
the
system functions,
E dyedie,
cases
just
we
we skall
one
X
shall
viz.,for those given in terms of & tase inand
use
introduce
just
one
R,
Schroeder's
new types
K
grufs.
being
For
of diagram.
BASES
finite,
all
the
and
the
other
We shull alwsye symbolize a base involving & K of cardinality n emd an R of degree m, 1. e., an n-element K an foeaty¢ R, by & Rm
or, for typogrefic converience, by
Google
Kn Rm.
ISOTROPY DYADIC
ISOTROPY
Dyedi c Graf
e following be 2 postulate sct for u certain s_,'stem function on base K3 R2: K has just three distinct elements.
1.
2.
There is & unique X clement,
R11
holds.
Rad
fails.
For any
distinct
K elemmts
"1", such thet
«, b,
This pestulste set may be represented diagrammatically
JEER 21
/
7 5]
as in Fig. A, where the X elements are labelled 1, v 2 2, 3. In this figure the element & is found on the left, and the element b at the top. When Rab holds, the square labelled (a,b) is mrked "+"; when Rab fails, the square is marked "-" Factorial
T
Famil
ure
concerned,
are
so
tiee
Postuls tional it
is
represented,
properties
immeterial
are ever represented it
Google
is
whether
by any grafic equally
of & system function
or
not
scheme.
immaterial,
such
4nd,
from
proper-
the
if they stand-
point of the postulationsl emte
are
taken
with
one
6
properties,
permutation
whetler the K eleu-
or
another.
[Footnote.
We use the term "permutation" rather than "order", in the case of & non-finite K, the elements may be with different permutations within one order tyvpe.
becuuse, taken Thus,
ferent
within
1,2,
3, 4,5,
the one three
6, «eo, and 2, 1, 4, 3, 6, 5,
permutations
order
Hence,
of
typeas .)
a
caintable
postuletionally,
elements
of
aur
with permutution 1,
it
system
lesde
does
function
2, 3, as in Fig.
the possible 3! permututions, This
set
to the
auxiliary concepts.
of
not
A,
on
Figs. A-F.
introdwetion
+a., are dif-
elanents
mutter X3
whether
R2
ure
or with
of the
uny other
first
ot
our
We shall cull the set of 3! grufs,
u factorial family alT thoee and only
the
taken
of new
A-F,
of grufs. Lore generall, the set of those n! grafs obtained from a gziven gref
by urrsnging the K elements with all the n! peruutstions constitutes
a
factorial
family
of
grafs.
Thus, when a postulate set is represemted graficelly by & single graf, rather than by the whole factorial fumily of
gr‘t‘LEha s, the purticuler permutation of K elements chosen for the
graf
ie
extra-postulational,
ally irrelevant. Ordinsrily,
neitrer
£11
all
n!
the
grafs
therefore
the n! grafs of = factoridl
identical
with factorial
and
nor
family A-#. of
all
dietinct.
It msy huppen,
& fectorisl
family
postulation-
family are
This
is
the
however,
are
distinct.
case
that
Thus,
1f one of the grafs for » certain postulate set on K3 R2 is Fig. G, the factoriul femily, Figs. G-L, coneists of n!
grafs
which
are
Isotro;
finzally.
&ll
distinct.
it way happen that
sll the n! grafe of a
fuctorial femily are identical. Let us consider, for example, the following set for a system function on buse K3 Z2 :
0.
X hae
2.
For
1.
The
we pleace,
with b".
For
class
any
just
any
X
three
element
distinct
function
K may
& stinct
X
elements.
8,.¢s00000000.. elements
be
a,
b,
Zaa Zad
interpreted
and Zab may be interpreted as
postulate
as
holds. fails.
any
class
"a is identical
This postulute cet ray be revresented
by the graf
of Fgz. 1, where the K elanents are labelled 1, 2, 3.
factariul
are
all
In
femily
identical.
the
consists
Present
system
of
the
six
function,
grafs,
Figs.
whatever
1-6,
The
which
postulational
property holds for amy K element holds alsc for any other;
Google
and whatever pos tuletional faile also for any other.
elenents
7 K element of the
property fails for any That is to say, no two
ére Kz-distinguisheble,
and therefare no ome
elementr is Kz-identifiable. — The grafic equivalent of this state of affaire is identity of all the grafs of the factarial family. will say
of the the
4 system function which hus the property just memtioned be
that
system
said
to
the
have
system
function
postulate
set
is
thut
the
property
function
is
tlerefare mekes
one
of
isotropy,
isotropl
that
fs
identically
the
about eny two of the elements.
eand
*n
we
determined
same
shall
ieo tropic
by
s tstement
&
For the base of an isotropic system finction we shall use Kz, the letter Z, as the initial of "zero", being
always
intended
to
suggest
thet
the
system
function
thus:
3o
dyadic
2?
furnishes
"zero"
information ubout postulational distinctions of elememts. We ehall symbolize an isotropic system function by O (zero), and shall indicete an isotropic system function of, -say, three elewente by writing the zero as a subseript to the humber
with
of
How &
elements
many
three
involved,
isotropic
element
system
K
end
a
method for answering this new corcept.
funct
ions To
are
possibdle
obtain
a general
type of question we introduce &
Vslidands
T eymbol "+", or "-", put into & graf, reans that, for certain combinations of X elements, the given relational function respectively holds, or fails, and thus "+" and "-"
represent, functioual
respectively, positive and yalidation. e shsll call
vali datum,
Herce,
negative validatum. class
Just as we function,
language
it useful velidetum
"+"
is
a
generalized relation to
function,
positive
velidetum,
the rotion relational
the concept a vali detum
neme
TT we
Fig.
7.
&
&
so we find
validatu. letters.
We shall A4 validatum
therefare, ambiguously, either the or the negutive validutuim, "-".
definecd the ngw concept, we shall hemcefarth nsme validatum function by the nore convenient
yslidend:
respectively
"-"
of validetum to that of function we shall mean
& two-valued function whose values are symbolize validatum functions by Greek
furction, o, represents, positive validatwa, "+",
and
of cless to that of function, language to
snd sy stem to systenfunction,
to generalize function. By
Having replace the
negative relstionaleach of these symbols
change
This
in
Fig.
place
figure,
1 by putting validands Oy ; «ese,® g3,
of
the
which
Google
nine
validata,
the
is & graf function,
result
is
we shall call
a hypergraf, (pasff’ive or We
When all negative)
may
now
8
the validands validata, the
write
aut
all
the
are repleced by suitable hypergraf becomes a graf.
3!
hypergrufs
obtainable
from Fig. 7 by arranging the K elements with all the 3!
permutations,
call
Figs.
7-12.
This
sary nine
and sufficient condition validande reduce to two,
of
grafs,
When
this
Figs.
condition
7-12,
is
reduces
hypergrafs of u_ factorisl the hypergrafs isotropic.
tropic
hypergrafs
shows
satisfied,
to
Fig.
euch
13.
of
When
The
conditions: K has just three
1.
7For any
2.
For
forms
and
distinct
K element
any distinct
aa
ab
is
shall
a necesthat
the
= Va2= AL, the
all
Isotropy Superpostulates for K3 e hypergraf of £1g. 12 18 determined
following 0.
that
for their identity as followe:
we
hyper-
the
n!
family sre identical, we shall call Hemce, Fig. 13 remwesents an iso-
hypergraf.
Dysdic
3!
A= oy,= Qy=p =¥y
=Haa §
==y
the
set
a factorial family of hypergrafs. An"examination of these E?pergmx’s
we
&y
«
«
call
by
elements.
X elements
shell
analytically
« .
.
+»
&,
880gq
b, abOlgf
atomic
dyads.
4n
atomic dyad together with o validand--e. g.,.,_aaul:—ugetmx' with Olae, or_é_t_s ogether with Olef--We Bhall call an atomic superpostulate. ‘hen the validand is replaced by & [posiIIve or negative) validatum, the atomic superpostulate becomes an atomic postulate. Thus aa®eqmay become either &a+ or ae-; abOlelmay become, independently, ab+ or ab-.
Hence,
postulate end
2.
To
Fig.
13 is determined
completely by the K3
togetler with the two atomic superpostuletes distirguish
this
type
of atomic
1
superpostulate
from other types to be considered later, we shall call 1 end 2 & set of isotropy The
validands
velues independently, determines
faur
grafs,
atomic superpostulstes.
and Olegmey
assame
ic.
If the
function,
2'2.
Z'
or
"-"
and
represemts
four
system
13
functions.
each of the grafs is iso-
we call the relational functimme 2', 2'', 2''', tem functions represented by Fig. 13 are the
following: (1) faa=+_;
Buce=X3
values
and therefore the hypergraf of Fig.
Since the hypergraf is isotropic, 2'7'7
"+"
Olab=+
In
holds
this
.
three
element
universally.
Google
dyadic
Hence
Z'sb
isotropic mey
be
.
system
interpret-
.
A e€d u8
"a
is
either
(2) Oaa
Base=K3
==
2''2.
sally.,
identical
=-
this
o
with
system
or
different
function
Z''
nor
=t
Base=K3 2'''2. rretable as "s
different
;
Olal
=-
o
;
ool
=t .
from
of
univer-
these
four
system
is
inter-
2s "a is difer-
b".
Each
b".
b".
BasewK3 2''''Q, Z''''ab is interpretable from
fails
In this sytem fuhction Z'''asb is identical with bd". Fig. 1.
(4) Laa==
ent
from
Z''ab is interpretable as "a is neither
with
Qlaa
ofal
In
Hemce,
(3)
identical
;
9
functions
is
determined
by
a postulate set on a distinct buse; i. e., these system functions are non-cobaszl. Therefore, the graf of anyg one of these system Functions cannot be obtained from thut of any otker by = mere permutation of elements; i. e., the four
thut
tions
grafs
ere
non-cofactorial.
cofectoriaIlty imply
We
esch
have
of
grafs
other.
now
answered
t is
and
the
not
diFficult
cobasality
question
&s
of
to
to
system
how
see
funo-
many
iso-
tropic system functions ure possible Wi th a three element K and a dyadic Z. There are just fair such system funcyions. These are interpretable in terms of four basic logical
relatimc
difference.
adic
that we may call
Isotropy
f we
four,
we
truism,
Superpostuls tes
Increuse
obtain
ihe number
the
same
falsism,
for
K4
of K elements
results.
See
16,
when
adic
isotYopy
reduced
to
a finite
from
Figs.
Dyasdic Isotropy Superpostulates for Kn Lore genersally: y finite dyaudic #g.
identity,
14
three
and
n-element
dyadic
n-element
and
15.
to
hypergref,
isotroric
bypergraf on Kn z2, Fig. 17, involves just two validends, e and olef , and is determined analyticslly by the dy0.
X has
2.
PFor any
l.
For
superpostulate
any
For
any
finite
just
n,
K
n
set:
(finite)
element
distinct this
&,
+
distinct +
«
K elemerts
superpostulute
«
a,
+
elements. .
b,
set
«
280lag
abdgf
determines
just four dietinct dyadic system functions, which are the
only dyudic n-element
isotropic
system functions,
viz.,
those which ure interpretoble with the dyadic relstiore
truism,
fulsism,
identity,
Google
snd
difference.
of
Isotro; 30
f
Extensional Definition far, we have defined 1sotropy
of u certain system function;
intensionslly. In Isotropy ¥s
We the
may set
as
a
10
.
in
1i. e., we m!géf':
property
otropy
also defIne it extensionally, thus: of all those and only those syetem
functiors determined by & hypergrsf whose factorial family consis te of hypergrafs which are all identical.
TRIADIC
Irisdic and
ISOTROPY
Graf
Tom Firite isotropic dysdic system functione,
hypergrafs, Let
the
furction
we
proceed
following
on
base
0.
K3
23:
K has
l.
For
2.
PFor
be
just
any
any
To
a
the triadic
postulste
three
K
distinct
element
X
a,
element
Zabe
fails.
b,
for
a
system
elements.
Zaaa
a,
case.
set
¢,
holds.
not
all
identical,
X is-intermretable as any clase we choose,
and Zabe
may be interpreted as
"a, b, o, are all identicsl™.
in
form
This postulute set may be represented by a triadic graf
various
useful
ways.
for
air
The
present
of
inquiry
figure represents a "culic" "slices", (2.v2v?)
of
(£.v2v3).
value
trizdic
iz
1In each
of
vl.
This
of
thet
of
This
ut the bottom, layer (2.v2v3)
layers,
v2
is
most
layer is on
faind
graf
fecilitetes
and also
on
the
elements
2 and
just one
extension
this triadic For ocxample,
v2,
and
graf of Fig. 18, and the system function it represents,
are
vZ, leads to Fig. 19. (Here second and third layers must therefore
its 3%
3!
of
Mg.
16
trisdic
we
tires element triudic
independent va.idunds.
necessury
thrauughout
vl,
should be noted that the interchanged) The triadic
isotropic.
Trisdic h"i%ergrat From the gruf
ing gguerel
it be
3,
the
top
foreshadows &
generulization to be discusesed later. The 2! grafs of the factotial family of graf are easily found to be 21l identical.
of
find
18.
und each layer involves
to tetradic and higher degrees, permusution
we
Pig.
gruf divided into "layers" or
of these
form
graf
thét
80 tuct layer (1.v2vZ) is is on top of (1.v2vZ), und
left, end V2 ut the tcp;
the
grafe,
and
sufficient
hypergrafs
to
hypergref,
the
Fig.
48 in the dyudic
conditi on
of the
Google
proceed for
fuctorisdl
the
correespond-
20, with
cuse,
identity
family
is
of
the
the
obtained
easily, and is found restricted validande
to be the following, are reduced to five:
where
the
27
11 un-
Uy = Yaan= Ay, = Ngq
far = Ny = Xy Vo=
Y123 = Y3y = When
T v,
=Yy, =%
Ya 20u=
qll3=
Sy
= X323
3=TN Ss ¥y,
Dz
3= Yz =
this
comdition
is
=X
2
n
Yp= Yy= ¥aa, =,
28
X,
=y
< Aony
= XY
suatisfied,
each
,
of the
hyper-
grafs.of -the factoriel fumily of Fig. 20 reduces to Fig. 21. Hence, Fig. 21 represents a three eclement triadic isotropic
hypergraf.,
Trisdic
Isotropy
Superpostulates
"_“me“ruypergm by
the
o;
following
triadic
atomic
0+
K has
2,
Ffor
uny
distinct
"
"
"
1.
three
for
K3
s detennined anal ytically superpostulate
distinct
eleuments.
For any X €lement &,.ececesesss
3,
v
4.
6.
This
just
e
.
oW
"
"
"
set
aba, abb, abe,
triads involves Since each
Jjust one of these
"
n
"
"
"
"
superpoe tulate
viz., uaa, aab,
X elements
e,
"
Iriadic
32
non-cobasal
Isotropy
validand. validends
graf,
system
Superpostulstes
IZ we increase four, the result is
¢ number the sume.
may
hypergraf
on Kn 23,
a.bbok
¢,.
a.bodkf,
atomic
assume
functions.
trinds,
for
the
value
"+"
this hypergruf grafs, and
Kn
of X elenents from three See Figs. 22 and 23.
More genersally: Any finite Pig. 24, when reduced to &
isotropic
a.bal
and each of E¥E 86 etomic
or the value "-" independently of any other, determines 2.2.2.2.2, or 32, non-cofactorisl
therefore
a.abol ol
b,
8, b, five
2.880 aq
b,
. b,
involves
set:
to
triadic n-element hyperfinite triadic n-element
Fig.
26,
involves
the
same
FIve valldends, and is determined analytically by the same superpostulate set a8 for K3, except that the number of X
elements is changed from three to any finite number,
TETRADIC Tetradic
et
ISOTROPY Graf
The following be u postulate
Google
n.
set for & system func-
tion
on
base
K4
0.
in
Z4:
K has
1. 2.
4As
12
just
four
distinot
elements.
©For any K element &, Zaaaa holde. PFor any K elements &, b, o, d, not identical, 2Zabod fails.
previous
cases,
K
may
be
taken
as
all
any
class
we plesse, and Zebed may be interpreted as "a, b, ¢, and d are all identical". This postulute set mey be represented by a tetradic graf in various ways. For our present purpose
we shall use the form of tetradic
which
sdic
is
an
extension
case, Fig. 18.
af is
divided
? v2v3v4), into In
and
v4
one be
of
at
In Fig.
16
the
top;
or
we
"slices”, layers
each
employed
for
to
be
all
(1.v2vZv4),
of
in turn,
vZ
(1l.vZv4),
these
is
tri-
(2.vev3v4),
ere divided
found on
leyers
identicel,
and
therefore
and the system function it represents,
Tetradic
26,
the
26, the "faxr dimensional"
layers,
anmd these,
dyadic and
graf given by Fig.
frm
,
the
(44.v2v4).
involves
value of vl, and just one value of v2. The 4! grafs of the factorial family of this
found
graf,
layers,
the
the
cubic
(4.v2v3v4),
dysdic
each
into
of
left,
just
graf
this
will
tetradic
are
isotropic.
Hypergraf
A5 in preceding cases, we gereralize from the graf to the corresponding hypergraf. If we were to replace, in Fig. 26, each "+" and eech "-" by an independent vslidend, we sha1ld obhtuin the generul fair element tetradic hypergraf, with its 4.4.4.4, or 256, unrestricted validanis., The necessary and sufficient condition for the identity of all the
4! hypergrafs of the fuctorial family of this gemral hypergraf
Fiz.
will
27.
be
(In
found
order
to reduce
to
gain
the
256
certuin
validunds
notatiomsl
to
fifteen,
advsntuges,
we reprecent some of the 15 validends subscript, and the others by aF with
by ano with a double a double saubscript)
Tetradic
K4
Isotropy
Amxlyflcdfl',
27 is determined
postulate
set:
SnErFostulates he
tetradic
for
isotroplc hype reraf
by the following atomic
0.
K
hae
Just
1.
unesstly,
2.
na.sbRal
5.
7.
eabadp,
6.
For
four
any
Google
4.
distinct
distinot
se.Bboy
of
180tropy super-
elements.
K elements
a,
b,
7.
ub.ablp
as.booly,
8.
ab.acflac
sb.n@y,
9.
ab.va i,
iig.
c,
d:
10.
ab.vbSpp
13.
ab.ob By
1. 12,
sb.bofy, sb.caf,,
14. 15.
ab.ce fec ab.cafed
13
This superpos tulate set involves 15 atomio tetreds, anae, nasb, r..: abco, abed, und sach of Ensae tetrede in-
volves
Just one Since each
validand. of the 15
validands
may
be
assigned
a
"4"
value or a "-" value indeperermtly of any otker, the number of non-ocofactorisl grafs, and therefore of non-cobasal system funotions, determined by this tetrudic hyprere? s plb. Tetrudic
~—
wken
Isotropy
iny it reduced
to
&
Superpostulates
for
Kn
fintte
n-element
tetrs Tc n-elemnt hypergraf, tetrudic
Fig.
28,
isotropic
hypergraf on Kn 24, Fig. 29, involves the cume 5 vatia-
ands, and is determined unalytically by the same superpostulate set us for K4, except that the number of K elements is changed from fair to any finite number, n. PENTADIC
Pentadic
TR
function
ISOTROPY
Hypergraf
B ‘f&l‘oung be a postulate set for a system on K6
1.
z5:
0.
X
has
PFor
any
just
¥or any K element a,
2,
K
elements
identical,
As in former cases,
soever, are
all
five di stinct
and
Zabode
identical”.
may
be
a,
elements.
zaneaa holds.
b,
¢,
4,
e,
Zubode fails.
not
all
K may be taken as any class what-
This
intermreted
pentadic
as
"a,
postulzte
b,
set
¢,
4,
may
e,
be
represented by & pemtadic graf in various ways, --in particular, by an extension of the drm of graf we have already employed fcr the triadic and the tetradic cases. This mode of
grafing
the
set of 5.6.5, layers,
3,.4, A1l
6,
the
given
pentadic
system
function
or 125, dyedic slices or layers.
five
which
belong
to
type
results
in
a
OFf these 126
(1ii.v4vb),
have exactly one "+" each, viz., (111.11)+, (222.22)4, . . ., (5556.66)+
i=1,
.
2,
the othe otler dyadic layders have "-" throughout. The 5! grafs of the factorial family of this pentadic
Google
grof
are
all
identicel,
and
therefore
this
graf,
&nd
the
14
system functiom it represents, are isotropic. If, in this pentadic graf, we were to replace each "4" snd eech "-" by un independenmt validand, we should obtain the
gereral
five
and
sufficient
5.5.5.6.6,
or
element
23125,
permtadic
unrestricted
condition
hypergraf,
validands.
for
the
idemtity
reduce
the
3126
with
of
The
all
its
necessary
the
5!
hypergrafs of the factorial femily of this gereral hypergraf
will
be
30. (For validands
Perntadic graf,
found
to
validands
to
notasional simplicity, we represent these by the letterg,with double subscripts)
BY.8.€
Isotro
Inalytically,
whose
Sufiegiostuletes e
typical
layers
ve
are
enent
for K6
pentadic
given
in
Fig.
62,
52
isotropic
30,
is
Pig.
hypere
deter-
mined by the following atomic isotropy superpostulate set: 0.
K has
Just
five
distinct
elements.
l.
For any dietinct K 888.88Yaa 6.
elements a, aab.anfi‘g
2,
a88.8b0(of
3.
asa.badfe
4.
aaa.bboly
5.
seaa.bodf,
15.
aab.cd
26.
uhb.unsu
36.
abc.as
26.
abb.cd 5&
52.
abc.de £ g
b,
¢, 4, 16.
Sieeseg
. 25.
Fed
aba.cd
£,
This suparpostulate set involves 62 atomic pemtads, aaaas, saasb, ... , abcdo, abcdd, abcde, amd each P hese penteds involves the
Since
number
cobasal
graf,
Jjust
one
of
system
Any
52
validands
non-cofactorial
functions,
is ,52.
Pentadic
validand.
tkese
Isotropy TInlte
ere
determined
Superpostulates
permtadio
Google
independemt
grafs,
n-element
and
by
for Kn
of
therefore
this
hBypergraf,
each
of
pentadic
when
other,
non-
hyper-
reduced
to
a fintte
Fig.
31,
pentadic
involves
the
n-element
same
isotropic
16
hypergraf
52 vul!flnns
and
is
on Kn
determined
25,
analyticslly by the czme superpostulate as for Kb, except that the uumber of X eleuents is changed from five to any f£ini te number, n. M-ADIC
ISOTROPY If we
proceed
from
finite
pertadic
isotropic
hyper-
grafs to the hexadic und higher degrees, we obtain more complicated Any
but znalogous finite m-adic
represented by a set of determined analytically
superpostulate
results. n-element
We find that: isotropic hypergraf
may
p(n-2) dyadic layers, and may be oy a definlte atomic isotropy
be
set, according to an obvicus generslization
of the method
we kave employed
for m=2,
7, 4, b.
STRATIGRAPFY DYADIC
FIRST
STRATIGRAFY
First se
i.
Strevigrufic Femily of K3 22 From the consideration of the ‘theory we shall now call them, all-isotropic,
e.,
of
eysten
functions
which
have
all
of isotropic, or, system functions,--
their
elame:ts
180tTopic--ve procecd to the study cf the theary of system functions
which
isotropic.
mentel
have
not
necessarily
In order to do
this,
all
dimensions, sented, und
parallel
to
This hypergraf,
if represented in three
wuld be a cube. Let us let us alsc imegine thie
the
vZvZ-axes,
and
it
perpendiculer
set of three dyadic (3.v2v3). Hence,
to
21 muy be regurded from two distinct points of view.
the
sible
we
imagine it so reprecube cut by planes
therefare
the vl-exie. The result will be the luyers, labelled (l.v2®Z), (2.v2vZ), In
elements
a new funda-
corcept. Consider the three element triadic isotropic hyper-
graf of Fig. 2l.
Fig.
their
we introduce
did
may
first
ways in
be
hypergrafs, Fig.
place
our
may
discussion
viewed
viz.,
trisdic
be regarded
of
a
single
isotropy;
as represerting
We shall call 21, the first
single
it
of representing
(1.v2vd),
a
set
(2.v2vZ],
as
one
triudic 1in
of
of
aa;
hyve rgraf,
the
second
three
(3.vival.
pos-
dyadic
place
this set of three dyedic hypergrafs, Btratigtafio fumily of the original
isotrgp
¢
Google
hypergraf.
as
Let us study some of the consequences 21 from the second stendpoint.
Fig.
of
reyurding
16
First Str ufy of K3 22 The a5 e T LySerrirs which ve have just defined us the first
stragigrafic
family
of the
given
triasdic
hypergraf
the importent property of constituting & factorisl
hypergrgrufs.
For example,
if we teke the
Arst
have
femily
of
these
of
dyadic hypergrafs, (1.v2v3), amd write out the 3! hypergrafs obtainabtle from all the permutstions of the X elements, we fird that the intercaunge of elements 2 and 2 lesves the
hypergref invariant, waeress any change elemert
1
2l.
obtair
of
(1.v2v?) We
(2.vevz)
chzrges
the
consists
eractly
or with
hypergref,
of
the
the
(3.vivd).
three
sume
so
in the vosition of
that
the
dyudic
result
if
fretoriul
hypergrafs we
family
of
sturt
with
Pig.
If we tuke the generul dysdic three element hypergraf,
®g. 7, with its nine independent validends, and reguire thut ut least tw of the elanents, say 2 and 2, be isotropic, --i.
e.,
thut
The permutution
hypergréf.unchunged--we cient
condition
for
this
of
2 and
3 shull
leave
find thut the necessury md is
tmt
the
nine
validunds
the
suffi-
be re-
duced to five, exuctly &s in (1.vZv3), Fig. 21. Since we huove as yet imposed no otler condition upon
the five vulidands, the isotropy-value of element 1, i. 6., ite isotropy or non-isotropy, is still entirely undetermined.
Hence, any one of the dyndic hypersrafs of Fig. £l repre=sents w11 those and only those three element dyudic system functions
fuct
gréfs
we
which
indicute
of Mg.
have
by
21 hoe
at leust
siyi:g
two
thut any
elements
one
sbratigrafy 1
) 2,
isotropic.
of tke
dvedic
. Since
Thie
hyper-
the number
of elements whose isotropy value is yet und~termined is one, we cell this tke first strotigrafy of the original trisdic isotropic
hypergraf.
first Stratigrafic Pamily of Kn 23 In 1ixe mencer, Flg. 25 may be viewed us representing elther u single n-element trimdic isotropic hypergruf, as we
qIT ecrlier, lubelled
nypergrefs of
or a set of n dyedic hypergrufd,
(1.VEZv3),
.....,
(D.vev3).
is, ty definition,
the origiral Tals firct
This
set
viz.,
thoso
of n dysdiec
the firet stratigrefic
single n-element tricdic 1sotropie hyperzraf. stretigrafic femily comstitutes u factoriul
fumily of hypergrufs. If we tuie, for exauple, the hypergraf (1.v2v3), and write out the n! hypergrafs
uble
from
11
fomily
the
vermutations
thet the pernutation o £ »ny
Google
cf
the
K
elements,
two of the elements
we
dyudic obtuinfind
£, %,...,
1,
lecves the hypergraf inveriunt,
17
wheress any chauge
in the
position of element 1 chenges the hypergre?,
so that the
of
start
fectoriel family #g.
(2.v2vZ),
rirst
25.
or
1T we were
should
for this
of
find
hypergrafs, which
have
...,
%o—fi.ke
consists
csume
result
of
22
the
of the
(n.vivad).
general
if
we
n-element
n hypergrafs
dyadic
tThat
and
trg
ig.
(i.viv?),
at
necessury
the n®
only
least
&nd
vulidands
the
hyper-
26.
i=1,
those n-1
2,
Hewe,
.., n,
n-element
elements
sufficlent
condition
be reduced to five,
first stratigrafy
of iig.
dyzdic
Zsotropic.
of the
25 represents
system In
functions
otker
given n-element
triudic Tsotropic hypergraf.
exsct-
any one of the dyadic
sny one of these dyadic hype rgrafe has stratigrafy or,
with
16, with its n.n independent validunds, &nd were thatst least n-1 of the n elements be isotropic,
is thst
those
the
of xn
1y es in (1.v2v3), 2ll
(1.v2vZ)
odtain
(2.vevZ),
Stratigrufy
gruf, #g. to require
we
Ve
words,
1¢ ) (n-1)
Dyedic #irst-Stratigrafy Superpostulates for Kn From thece dlugrammatic results we proceed to the ana1ytic vereion. When Fig. 26 was considered =e a single n-element trisdic hypergraf, it wes determined by the isotropy superpostule te set, 1-5, given on page ff . Hence, layer (1.v2v3), #ig. 25, can be determined by the same superpostulste set, provided only we replace a by 1 in each of the five atomic superpostulsies. But layer (2,vive), Fig. 25, belonging to the sume fuctorial fumily as (1.vivd), is determined ‘3{—@ identically the szme superpostulate set, if we merely*I by 2 Likewice, any layer (1.v2v?), i=l, 2, .., n, Mg. 25, is determined by this superpostulite set, if we replace 1 by i. This is only a speciul cuse of the relation which holds vetween any superpostulate set and 1t8 hypergrafic representation; for, any two hypergrufs of a factorial family differ only by o permutation of elements, and not by any formsl superpostulaticnal property. Lence, if we choose to represent a superpostulute set by u single hypergraf rather then by the whole factorial family, the specific permutation of K
elements
factor.
isotropic,
employed
Furthermore,
introduces
un
anslytically
since the given
irrelevant
tricdic hypergraf
is
there is no formally statable difference between
uny two of the elements. Hence, analytically, there is no aifference whatsocver between writing 111, etc., and writing 222,
point
etc.,
or iii,
of view,
any ome of the
the
etc.
In other words,
superpostulate
n dyadic
Google
hypergrafs
set
in
chosen
from the analytic question
determines
arbitrarily,
but--
once
chosen--regarded
as
fixed.
That
is
ic change from abc, where & is a varisble,
not
to
lbe,
where
"oonstent",
but
to
1
is
a
p,bs,
"constant",
where
p,
is
or
to
say,
unalyt-
like b ajd ¢, is
2bc,
&
18
the
where
2
parameter.
is
&
Hence, we muy say, indifferently, FRet The eomplete set
of n dysdio hypergrafs,
one
of
qitions:
these
Fig. 25, or any arbitrarily
hypergrafs,
O.
K hes
1.
is
determined
just n (finite)
by
the
distinct
chosen
following
elements.
For the stratigrafic K element B,, wow K element
2.
p,ep,d A p
2.
con-
Py4,
£aur
there
stratigrafic just
are
Permutivity
"
Google
nine
elements such
are
But the peretill
permutivitiee,
4°+{n-4)°
(1,43 )4(n-4),
, Fig.
undeas
41;
, Pig. 4%;
.
Permutivity
'21‘20)”"'4)0
, Fig.
4%;
" "
(2548,)14(n-4),
, Fig.
44;
(20‘20)0““‘4’0
, Pig.
45; ;
"
4'({n-4)°
, PMg.
46;
"
11&5'{(11—4):,
, FMg.
47;
"
41&ln-4)°
. Fg.
40.
These
eight
permutivities
require
no
Multiplicstionsl Permutivities “Tyadic. e tourth siratlgraty, 4,
30
explenution.
,(n-4), , dtermines,
in rddition to the above eight permutfvities,’also s ninth.
We may impose upon the 26 validands of Fig. 40 enough conditions to mutation and the changes
reduce of the
Fig. 40 to Fig. 48. In this case, elements 1 and 2 &lone changes the
peruutution of the hypergraf.
the perhypergraf,
the elemerts 2 and 4 slone elso But the simultaneous permutation
of
1 und 2, and also of # and 4, leaves the hypergraf unchenged. This
esimultaneous
permutation
ample of vhet we shall
In of
of
sets
¢f
elements
call u multiplicational
is an
ex-
permutivity.
this cs3e, the "multiplication" conslsts of two "factors”, two elemerts each. We shall symbolize this permutivity dy
2.2, or, briefly, by 2% . inum of two
elements,
Just sc isotropy requires u min-
and cyclopermutivity
elements, so a multiplicational permutivity mum of four elements. The ninth permutivi ty determined by 4(
therefore
leads
Permutivity
Por the special to
(4g445)y
2
the two
2 *("'“a
case n-4=4,
permutations,
a minimum of three requires )ln-4)°
, Fig.
the uubigious
(40*40)0
and
&
,
permutivities
Google
of
class
four.
is
48.
(4y+4,)
In & similar way we obtain the trimdic, tetradic,
(m-4)-adic
mini-
)
....
CLASS
S By
PERMUTIVITIES rrecisely
mutivities
unalogous
determired
ctratigrefies,
fies,
3t
the
by
necessery
methods
by the
determining,
dyndic,
we
fifth,the for
trisdic,
each
find
sixth,
...,
of
the
sets
...,
these
per-
s-th
strutigra-
(m-s)-udic
ditions to te inposed upon the respective sete
of
the
con-
of validands.
Cluse 5 Permutivities
= For exauple, among the permutivities determined by tae f£th stratigruty, 5 )(n-5)_ , sre the following [We omit, in
each
cuse,
5y
4 (1y44),
the
the
(25485),
(afitzu),(zvzv),
sixth
stratigrafy,
B
sTnlTarly, rmong
ccse,
the
(1345,),
(1142043,),
(2142,),
&
6 Permutivities
esch
isotropy,
5 ,111o44).
Class
=
muin
6(
nain
la,‘oso).
134(20420)0
{21#5
K
)(n-slo
5 (303,
12102
),
o (330,
51,
),
5
v
deteriined by the [We
onit,
in
"b{n-G)O"].
(3043 )
1, (2443,)) o
21402042005
(492,), (llizgfilo)' (2%e25), (a42)), G lelfiz“),
» 13+(242);
, are, following
(2084 ), (31¢5°).
2
),(1,02
the permutivities
isotropy,
(258450,
"&(n-s)o"].
{20020&20)0
»
4 204(2,42);
(13450, (2y04),
(20020‘20)1
.
{2,,‘20‘29)‘,,
[o2.2. utionsl" per per2 3 [=2.2.2, & — "mltiplicutionsl"
mutivityl. PERMUTIVITY
SUPERPOSTULATE
SETS
“hen we 8dd, to © given strutigrufy superpos tulate set, enough conditions upon the velidunds to deteruine the permutivity of all the stratigrafic elements, we obtain complete (“"cetegorical™) superpos tulute sets. Trese we ciwll call ermutivity supe-postulste Thus we proceed, by s
sets. definite
method,
froz
complele
isotropy superpostulute sets, throsgh incomplete stratigrefy superpostulute sets, to couplele pertativity sugerpostul.te sets.
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APPLICATIONS In
the
detailed
tke
preceding
exposition
use
of the
rermutivity.
proof,
new
We
of
sections
presemted
our
method,
now
mention
concepts
shall
we
of
32 a
somewnat
this
method
very
briefly,
isotropy,
involving
stretigrafy,
some of the more inportant applications
Atomic
Poetulute
end
and
without
of this method.
Sets
#,ary In permutiv ty superpostalete set, we replace
all the validands
missible
"4's™
znd
postulates.
Destruti%r\:flzed T
1his
set
by an sppropriete "-'s",
Atomic
we
obtain
Postulate
of atomlc
set of validata,
u
complete
Sets
postulates,
we
set
mey
of
by peratomic
suppress
the
mention of stretigrafic eleuents by "carouflsging" these elements as "constants". [This accounts for the existence of
the
"principle
of
duality"
in
algebrus and projective geometry. elemengs are suppressed, we have
city".
Destratigrofized
T
Deatomized
. e we may combine
such
subjects
as
Where several the "principle
DPostulute
Boolean
stretigrafic of rultipli-
Seis
atomlo postulutes in various
wnys into single non-atonic postulates. e then obtain ordinary postulate sets of current mauthemsmtical logic.
Anslytic Katabaeis Ve may
tnus
proceed,
by definite
stepe,
from
the
isotropy
to stratigrefy, then to permutivity, then to atomic postulates and finelly to "ordinary postulates”.
Anslytic Anebasis S 27 aT% reverse the process, begln with ordinary pstulates, and ond with isotropy super postulates. Waximal
Inde¥endsnoe
A set
of
any
two
p
postulates
such
that
no
p-1
imply the p-th is called an independent set.
B
are
u
very
postulates
imply the whole of B. large
psrt--of
of all the nostulates A.
For
perdence.
shall
this
mean
e
By
of
an
independent
A may imply, however,
B.
Likewise,
a sst
set,
the
Thus, 4
postulates
if A and
does
not
u part--perheps
subset
consisting
except A mey imply & very lerge part of
reason we call such muximal
the
of
independence,
independence,
of postulates
Google
on
such no
the
minimal
other
postulate
hand,
implies
inde-
we
any
part of any other postulute. It is not dif?icult to sesthat any atomic postulite set, ne we have defined it, is maximally independent [See the wriferd abstract entitled "Lutually Prime Postulates”, Bulletin of the Americal Lethem tical Society, warch, 1916, p. 287). Coneistenc;
-z
'e-i_én e atomic postulate
either "+" elonme, self-consistent.
Tnfluence”
or "-" alone. A4ny two atomic
which
consequently
are
always
just,validatum,
It is there?are postulates have
mutually
no poseibility
fere with any other.
involves
one
exclusive.
for one atomic
1. e.,
bound to "spheres
There
postulate
i
be of
to inter
They are therefore bound to be inter-
consistent.
Completeness o superpostulate sets, and thus atomic postulate sets,
ure
constructed
according
to a definite
formula,
and
80 we can ulways esccrtein whether or not we have included all the atomic postulates gereruted by the formula. Hence, W6 know whether or not our postulate set is complete ("cate-
gorical").
Postulational
Ey
the
Te::hnl%ne
use
of
atomic
postulates
we are
emabled
to
solve
the three importent protlems of postulaticnal techaique, viz., coneis tency, independence, und completeness, by a non-interretutional method. And we ehow tit this holds for nomHinfte oo rell ee for.firite cases.
Order A”theory Iypes of ordinal isotropy, strutigrufy, und permutivity can be developed, tu u greut extent parellel to the reletionsl isotropy, Strutigrafy, &nd permutivity expounded above. By mewns of tuis ordinal theory, all of our results nay be extended to the cuce of trunsfinite order types. Cardinoid
The
Numbers
notion of we do not
concept
of
permutivity
gcurdinal number to Jefinme here). The
used especinlly
for those
licetive
seems
tion
of
esome
equivalent
oxiom,
of
ensbles
us
to
generalize
the
that of cardinoid number (which theory of cerdinoid number is
system
functions
Zermelo's
otherwise
axiom,
unsvoidable.
where the LSsunor
of
the
multip-
Equivalence of System Functions = Any two ey tem functionsare shown to be equivalent, i.e uniquely intertrenslatable, if they ere cocardinsl. This
=00 GOogle
holds:
(1)
(2)
for
finite
for
system
(co-ordinel
systew
functions;
34
tunctions;
or non-co-ordinal)
(3) for lindsble system functions a
class
"which
1In8sble Infinite
class. cluse,
hus
the
[We propose
power
of the
to
e 8
cardinel.
Cocardinal ity,
valence.
rother
tionsl
is
inel,
0 far
thun
we
have
with
isotropy,
The genersl
relationsl
been
systems.
not
a
necessary
concerned There
stratigrafy,
and
is
stratigrafy,
havirg
with =~
the same
condition
functions
system
theory
permutivity,
theory of interpretstionsl
isotropy,
a
cach of which is
the Ewo
4iny two cocsrdinold system
valent.
Systems
however,
to cell
continuun"
And we shall speak of & linesbly xnd cf lineubilityl.
(4) for ury two sjstem furctions, kaown
courtable
for
equi-
are also equi-
of
functions
interpreta-
which
relsativity,
leads
just as
to
and permutivity leads to the
general theory of notaticnal relativity,
Speciul Example: Einstein's Relativit e STeTaTs "gererelized Heoty of relativity" may be called: (1)
from the
notational
point
(2)
from
inferpretational
of view,
theory of temsor rels tivity; the
the general theory (1) 1s a special case of whut we theory of notational relativity; what we heve called the general relativity.
point
the
of view,
general the
of motional relativity. have called the general (2) is a special case of theory of interpretational
Foundetions of Deductive Logic Tnstesd of basing deductlive
logic
latee
Muthemtica),
on
such
relations
and
operations &s propositionsl negation, implication, disjunction, or incompatability, and on corresponding "ordinary" postu(e,
g.,
those
of
to base deductive logic propositional isotropy,
superyos tulotional soohical bearings.
Principis
it
is
possible
on the more fundamental notions of strutigrafy, and pertutivity. This
foundation for logic has important philo-
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