Geodesic

Volume 4 (1965) no. 1

Sommaire

Certain algorithmic problems for context-free grammars
p. 5-13
On infinite Frobenius groups
p. 15-29
Groups of automorphisms of group rings of right-orderable groups
p. 31-45
The complexity of the recognition of symmetry on Turing machines
p. 47-58