Table of contents : Infinite factorized groups....Pages 1-24 Infinite generation of automorphism groups....Pages 25-28 Non-orientable and orientable regular maps....Pages 29-42 The groups of automorphisms of non-orientable hyperelliptic klein surfaces without boundary....Pages 43-51 On certain one-relator products of cyclic groups....Pages 52-64 Efficient presentations for finite simple groups and related groups....Pages 65-72 On n-groupoids defined on fields....Pages 73-81 Automorphisms of certain relatively free solvable groups....Pages 82-85 Higher dimension subgroups....Pages 86-93 Doubly regular asymmetric digraphs with rank 5 automorphism groups....Pages 94-99 Extensions of the class of lie algebras with the lattice of subideals....Pages 100-105 A note on maximal subgroups in finite groups....Pages 106-109 On groups with a permutational property on commutators....Pages 110-116 On fibonacci groups and some other groups....Pages 117-123 Pathology in the representation theory of infinite soluble groups....Pages 124-139 A characterization of hereditary P.I. rings....Pages 140-145 Some problems in combinatorial group theory....Pages 146-155 Groups with many elliptic subgroups....Pages 156-162 Reflections on the constructive theory of polycyclic groups....Pages 163-169 Minimal generating systems for plane discontinuous groups and an equation in free groups....Pages 170-186