The Isomorphism Problem for All Hyperbolic Groups
The Isomorphism Problem for All Hyperbolic Groups
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所有双曲群的同构问题
DOI:
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发表时间:
2010
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通讯作者:
Vincent Guirardel
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作者:
Franccois Dahmani;Vincent Guirardel
We give a solution to Dehn’s isomorphism problem for the class of all hyperbolic groups, possibly with torsion. We also prove a relative version for groups with peripheral structures. As a corollary, we give a uniform solution to Whitehead’s problem asking whether two tuples of elements of a hyperbolic group G are in the same orbit under the action of Aut(G). We also get an algorithm computing a generating set of the group of automorphisms of a hyperbolic group preserving a peripheral structure.