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arXiv · 2307.05765

Tautological characteristic classes I

Jan Dymara·Tadeusz Januszkiewicz
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Abstract

We discuss the formalism of tautological characteristic classes of flat bundles. Applied to $PSL(2,K)$ it yields the Witt class of Nekovar. Applied to $PGL_+(2n,K)$, the general linear groups with positive determinant over an arbitrary ordered field, it yields (a generalization of) the Euler class.

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Jan Dymara, Tadeusz Januszkiewicz. 2023-07-11. Tautological characteristic classes I. https://doi.org/10.2140/agt.2024.24.2889

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