Algorithmically insoluble problems about finitely presented solvable groups, lie, and associative algebras.- On the simple groups of order less than 105.- On some algorithmic problems for finitely presented groups and lie algebras.- The concept of "largeness" in group theory II.- Extending groups via tree automorphisms.- HNN-constructing finite groups.- Analogues of the braid group.- Some uses of coset graphs.- Discontinuous groups.- Commutative quandles.- Metabelian groups of prime-power exponent.- Symmetric graphs and the classification of the finite simple groups.- Decision problems for infinite soluble groups.- Automorphisms and isomorphisms of integral group rings of finite groups.- On induced isomorphisms of group rings.- ¿er Darstellungen von Elementen und Untergruppen in freien Produkten.- On the circle groups of finite nilpotent rings.