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Semicontinuous maps on module varieties

  • Christof Geiß , Daniel Labardini-Fragoso und Jan Schröer EMAIL logo
Veröffentlicht/Copyright: 23. August 2024

Abstract

We study semicontinuous maps on varieties of modules over finite-dimensional algebras. We prove that truncated Euler maps are upper or lower semicontinuous. This implies that 𝑔-vectors and 𝐸-invariants of modules are upper semicontinuous. We also discuss inequalities of generic values of some upper semicontinuous maps.

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Received: 2023-02-04
Revised: 2024-06-09
Published Online: 2024-08-23
Published in Print: 2024-11-01

© 2024 Walter de Gruyter GmbH, Berlin/Boston

Heruntergeladen am 21.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/crelle-2024-0049/html
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