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arXiv · 2610.18720

The Becker--Gottlieb transfer is not functorial: An example based on units of group rings

Georg Lehner·Cary Malkiewich·Florian Naef
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Abstract

We show by explicit counterexample that the Becker--Gottlieb transfer cannot be made functorial. A different counterexample using rational homotopy theory was discovered concurrently by the third author and Robin Stoll.

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Georg Lehner, Cary Malkiewich, Florian Naef. 2026-10-13. The Becker--Gottlieb transfer is not functorial: An example based on units of group rings. https://arxiv.org/abs/2610.18720

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