Table of contents : Front Matter....Pages - Computing Zeta Functions via p -Adic Cohomology....Pages 1-17 Using Primitive Subgroups to Do More with Fewer Bits....Pages 18-41 Elliptic Curves of Large Rank and Small Conductor....Pages 42-56 Binary GCD Like Algorithms for Some Complex Quadratic Rings....Pages 57-71 On the Complexity of Computing Units in a Number Field....Pages 72-86 Implementing the Arithmetic of C 3,4 Curves....Pages 87-101 Pseudocubes and Primality Testing....Pages 102-116 Elliptic Curves with a Given Number of Points....Pages 117-131 Rational Divisors in Rational Divisor Classes....Pages 132-139 Conjectures about Discriminants of Hecke Algebras of Prime Level....Pages 140-152 Montgomery Scalar Multiplication for Genus 2 Curves....Pages 153-168 Improved Weil and Tate Pairings for Elliptic and Hyperelliptic Curves....Pages 169-183 Elliptic Curves x 3 + y 3 = k of High Rank....Pages 184-193 Proving the Primality of Very Large Numbers with fastECPP....Pages 194-207 A Low-Memory Parallel Version of Matsuo, Chao, and Tsujii’s Algorithm....Pages 208-222 Function Field Sieve in Characteristic Three....Pages 223-234 A Comparison of CEILIDH and XTR....Pages 235-249 Stable Models of Elliptic Curves, Ring Class Fields, and Complex Multiplication....Pages 250-262 An Algorithm for Computing Isomorphisms of Algebraic Function Fields....Pages 263-271 A Method to Solve Cyclotomic Norm Equations $f * \bar{f}$ ....Pages 272-279 Imaginary Cyclic Quartic Fields with Large Minus Class Numbers....Pages 280-292 Nonic 3-adic Fields....Pages 293-308 Montgomery Addition for Genus Two Curves....Pages 309-317 Numerical Evaluation at Negative Integers of the Dedekind Zeta Functions of Totally Real Cubic Number Fields....Pages 318-326 Salem Numbers of Trace -2 and Traces of Totally Positive Algebraic Integers....Pages 327-337 Low-Dimensional Lattice Basis Reduction Revisited....Pages 338-357 Computing Order Statistics in the Farey Sequence....Pages 358-366 The Discrete Logarithm in Logarithmic l -Class Groups and Its Applications in K-theory....Pages 367-378 Point Counting on Genus 3 Non Hyperelliptic Curves....Pages 379-394 Algorithmic Aspects of Cubic Function Fields....Pages 395-410 A Binary Recursive Gcd Algorithm....Pages 411-425 Lagrange Resolvents Constructed from Stark Units....Pages 426-441 Cryptanalysis of a Divisor Class Group Based Public-Key Cryptosystem....Pages 442-450 Back Matter....Pages -