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arXiv · 1601.06199

Representation theory and the cycle map of a classifying space

Masaki Kameko
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Abstract

We compute the Chern subgroup of the 4-th integral cohomology group of a certain classifying space and show that it is a proper subgroup. Such a classifying space gives us new counterexamples for the integral Hodge and Tate conjectures modulo torsion.

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Masaki Kameko. 2016-07-03. Representation theory and the cycle map of a classifying space. https://doi.org/10.14231/ag-2017-011

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