RT Journal Article
T1 Generalized Orbifold Euler Characteristics on the Grothendieck Ring of Varieties with Actions of Finite Groups
A1 Gusein-Zade, S. M.
A1 Luengo Velasco, Ignacio
A1 Melle Hernández, Alejandro
AB The notion of the orbifold Euler characteristic came from physics at the end of the 1980s. Coincidence (up to sign) of the orbifold Euler characteristics is a necessary condition for crepant resolutions of orbifolds to be mirror symmetric. There were defined higher order versions of the orbifold Euler characteristic and generalized (“motivic”) versions of them. In a previous paper, the authors defined a notion of the Grothendieck ring K (super index fGr) (sub index 0) (VarC) of varieties with actions of finite groups on which the orbifold Euler characteristic and its higher order versions are homomorphisms to the ring of integers. Here, we define the generalized orbifold Euler characteristic and higher order versions of it as ring homomorphisms from K (super index fGr) (sub index 0) (VarC) to the Grothendieck ring K (sub index 0) (VarC) of complex quasi-projective varieties and give some analogues of the classical Macdonald equations for the generating series of the Euler characteristics of the symmetric products of a space.
PB MDPI
SN 2073-8994
YR 2019
FD 2019-07-11
LK https://hdl.handle.net/20.500.14352/12437
UL https://hdl.handle.net/20.500.14352/12437
LA eng
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NO Ministerio de Ciencia e Innovación (MICINN)
NO Russian Science Foundation
DS Docta Complutense
RD 3 may 2024