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A proof of Kosniowski conjecture

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arxiv 2108.08699 v3 pith:N7YIEV24 submitted 2021-08-19 math.GT math.AT

classification math.GTmath.AT
keywords conjecturekosniowskiaffirmativeanswerboundarycharacteristiceulerfixed
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abstract

Let $M$ be a unitary $S^1$-manifold with only isolated fixed points such that $M$ is not a boundary. We show that $4\chi(M)>\dim M$, where $\chi(M)$ is the Euler characteristic of $M$. This gives an affirmative answer of Kosniowski conjecture.

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