Christof Geiß, Daniel Labardini-Fragoso, Jan Schröer
Published 2023-02-04Version 1
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.
Module varieties and representation type of finite-dimensional algebras
$τ$-Tilting Finiteness of Non-distributive Algebras and their Module Varieties
Some examples of $t$-structures for finite-dimensional algebras
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