A twist over a minimal étale groupoid that is topologically nontrivial over the interior of the isotropy

Armstrong, Becky; Ng, Abraham; Sims, Aidan; Zhou, Yumiao

doi:10.1090/proc/17159

A twist over a minimal étale groupoid that is topologically nontrivial over the interior of the isotropy
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by Becky Armstrong, Abraham C. S. Ng, Aidan Sims and Yumiao Zhou;

Proc. Amer. Math. Soc. 153 (2025), 1849-1866

DOI: https://doi.org/10.1090/proc/17159

Published electronically: February 27, 2025

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Abstract:

We present an example of a twist over a minimal Hausdorff étale groupoid such that the restriction of the twist to the interior of the isotropy is not topologically trivial; that is, the restricted twist is not induced by a continuous $2$-cocycle.

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