Presentation length and Simon’s conjecture

Author:

Agol Ian,Liu Yi

Abstract

In this paper, we show that any knot group maps onto at most finitely many knot groups. This gives an affirmative answer to a conjecture of J. Simon. We also bound the diameter of a closed hyperbolic 3-manifold linearly in terms of the presentation length of its fundamental group, improving a result of White.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference28 articles.

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