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arXiv · 2409.05107

Explicit formulas for the Hattori-Stong theorem and applications

Ping Li·Wangyang Lin
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Abstract

We employ combinatorial techniques to present an explicit formula for the coefficients in front of Chern classes involving in the Hattori-Stong integrability conditions. We also give an evenness condition for the signature of stably almost-complex manifolds in terms of Chern numbers. As an application, it can be showed that the signature of a $2n$-dimensional stably almost-complex manifold whose possibly nonzero Chern numbers being $c_n$ and $c_ic_{n-i}$ is even, which particularly rules out the existence of such structure on rational projective planes. Some other related results and remarks are also discussed in this article.

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Ping Li, Wangyang Lin. 2025-12-23. Explicit formulas for the Hattori-Stong theorem and applications. https://doi.org/10.2140/agt.2026.26.735

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