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Moduli spaces of Z/kZ-constellations over A2

Graffeo, Michele
2024
  • journal article

Periodico
COMMUNICATIONS IN CONTEMPORARY MATHEMATICS
Abstract
Let rho : Z/kZ -> SL(2, Z) be a representation of a finite abelian group and let Theta(gen) subset of Hom Z(R(Z/kZ), Q) be the space of generic stability conditions on the set of G-constellations. We provide a combinatorial description of all the chambers C subset of Theta(gen) and prove that there are k of them. Moreover, we introduce the notion of simple chamber and we show that, in order to know all toric G-constellations, it is enough to build all simple chambers. We also prove that there are k center dot 2(k-2) simple chambers. Finally, we provide an explicit formula for the tautological bundles R-C over the moduli spaces R-C for all chambers C subset of Theta(gen) which only depends upon the chamber stair which is a combinatorial object attached to the chamber C.
DOI
10.1142/s0219199724500196
WOS
WOS:001254316500001
Archivio
https://hdl.handle.net/20.500.11767/142631
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85197930149
https://arxiv.org/abs/2205.07492
https://ricerca.unityfvg.it/handle/20.500.11767/142631
Diritti
open access
Soggetti
  • Group actions

  • zerodimensional schem...

  • moduli of sheaves

  • Hilbert schemes

  • constellations

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