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Parity criterion for unstabilized Heegaard splittings

Published online by Cambridge University Press:  16 March 2010

JUNG HOON LEE*
Affiliation:
School of Mathematics, KIAS, 207-43, Cheongnyangni 2-dong, Dongdaemun-gu, Seoul, Korea. e-mail: [email protected]

Abstract

We give a parity condition of a Heegaard diagram implying that it is unstabilized. As applications, we show that Heegaard splittings of 2-fold branched coverings of n-component, n-bridge links in S3 are unstabilized, and we also construct unstabilized Heegaard splittings by Dehn twists on any given Heegaard splitting.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 2010

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References

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