𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A topological proof of Grushko's theorem on free products

✍ Scribed by John R. Stallings


Publisher
Springer-Verlag
Year
1965
Tongue
French
Weight
540 KB
Volume
90
Category
Article
ISSN
0025-5874

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


On Free Products of Semigroups and a New
✍ James Renshaw πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 58 KB

Isbell proved his famous zigzag theorem for semigroups using essentially topological methods in [Epimorphisms and dominions, in "Proceedings of the Conference on Categorical Algebra, La Jolla, 1965," pp. 232-246]. Since then a number of authors have proved this result using a variety of different te

A topological proof of the residual fini
✍ Marvin Tretkoff πŸ“‚ Article πŸ“… 1973 πŸ› John Wiley and Sons 🌐 English βš– 293 KB

The purpose of the present paper is to give a topological proof of the fact that the free product of two residually finite groups with a finite subgroup amalgamated is itself residually finite. This theorem, which is due to G. Baumslag [2], is a generalization of the corresponding result for ordinar

On a new proof of Litoff's theorem
✍ C. Faith; Y. Utumi πŸ“‚ Article πŸ“… 1963 πŸ› Akadmiai Kiad 🌐 English βš– 121 KB