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The Hirzebruch genera of complete intersections

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arxiv 2003.02049 v2 pith:32SDZ4JD submitted 2020-03-04 math.AT math.AG

The Hirzebruch genera of complete intersections

classification math.AT math.AG
keywords genuscompleteintersectionsformulahirzebruchgeneraalphabrooks
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Following Brooks's calculation of the $\hat{A}$-genus of complete intersections, a new and more computable formula about the $\hat{A}$-genus and $\alpha$-invariant will be described as polynomials of multi-degree and dimension. We also give an iterated formula of $\hat{A}$-genus and the necessary and sufficient conditions for the vanishing of $\hat{A}$-genus of complex even dimensional spin complete intersections. Finally, we obtain a general formula about the Hirzebruch genus of complete intersections, and calculate some classical Hirzebruch genera as examples.

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