![](/img/cover-not-exists.png)
The commutator subgroup of a free topological group need not be projective
Clarke, FrancisVolume:
57
Language:
english
Journal:
Proceedings of the American Mathematical Society
DOI:
10.1090/s0002-9939-1976-0404512-2
Date:
February, 1976
File:
PDF, 239 KB
english, 1976