The Ozsváth-Szabó and Rasmussen concordance invariants are not equal
- Autores: Matthew Hedden, Philip Ording
- Localización: American journal of mathematics, ISSN 0002-9327, Vol. 130, Nº 2, 2008, págs. 441-453
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
In this paper we present several counterexamples to Rasmussen's conjecture that the concordance invariant coming from Khovanov homology is equal to twice the invariant coming from Ozsváth-Szabó Floer homology. The counterexamples are twisted Whitehead doubles of $(2, 2n+1)$ torus knots.
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