Mathematical Proceedings of the Cambridge Philosophical Society

Quasipositivity and homogeneity

a1 Mathematisches Institut der Universität Basel, Rheinsprung 21, CH-4051 Basel, Schweiz. e-mail:

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baader s   [Google Scholar] 


We prove the following characterization of positive knots: a knot is positive if and only if it is homogeneous and strongly quasipositive.

(Received June 25 2004)
(Revised August 31 2004)