3.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- City University of New YorkUS566 papers
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Showing 1993 · math.GRShow all
2 papers · 2 filters
math.GR1993
Automatic structures and boundaries for graphs of groups
Walter D. Neumann, Michael Shapiro
We study the synchronous and asynchronous automatic structures on the fundamental group of a graph of groups in which each edge group is finite. Up to a natural equivalence relatio…
math.GR1993
A note on Context Sensitive languages and Word Problems
Michael Shapiro
Anisimov and Seifert show that a group has a regular word problem ifand only if it is finite. Muller and Schupp (together with Dunwoody's accessibility result) show that a group ha…