4 citations · 5 across the 9 of their papers we have counts for
12 papers
Finitely generated groups of diffeomorphisms with prescribed critical regularity in every dimension
Maximiliano Escayola, Carl-Fredrik Nyberg-Brodda
Let , and let be either the -dimensional sphere or the real projective space . Given , we construct a finitely generated group…
Free-by-cyclic groups are not relatively profinitely rigid
Carl-Fredrik Nyberg-Brodda
For and for every we construct families of pairwise non-isomorphic free-by-cyclic groups isomorphic to having isomorphic profinite comp…
HNN extensions and embedding theorems for groups
Martin R. Bridson, Carl-Fredrik Nyberg-Brodda
The Higman-Neumann-Neumann (HNN) paper of 1949 is a landmark of group theory in the twentieth century. The proof of its main theorem covers less than a page and uses only pre-exist…
Free inverse monoids are co-context-free
Tara Macalister Brough, Marianne Johnson, Mark Kambites +1
We prove (using grammars) that the free inverse monoid of every finite rank has co-context-free word problem. Equivalently, the co-word problem of the free inverse monoid of every…
The theory of one-relator groups: history and recent progress
Marco Linton, Carl-Fredrik Nyberg-Brodda
The theory of one-relator groups is now almost a century old. The authors therefore feel that a comprehensive survey of this fascinating subject is in order, and this document is a…
Three articles on one-relator groups by Wilhelm Magnus
Carl-Fredrik Nyberg-Brodda
This is an English translation of three articles, originally written in German, by Wilhelm Magnus (1907--1990). The articles are from 1930, 1931, and 1932, respectively, and were t…