Hecke operators on the \(q\)-analogue of group cohomology (Q1591746)

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scientific article; zbMATH DE number 1549901
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Hecke operators on the \(q\)-analogue of group cohomology
scientific article; zbMATH DE number 1549901

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    Hecke operators on the \(q\)-analogue of group cohomology (English)
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    9 January 2001
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    The use of Hecke operators in the study of automorphic forms along with connections between automorphic forms and the cohomology of associated arithmetic groups led naturally to the study of Hecke operators acting on the cohomology of arithmetic groups. From a purely algebraic perspective, one can ask whether Hecke operators act on cohomology more generally. This problem was investigated by \textit{Y. H. Rhie} and \textit{G. Whaples} [J. Math. Soc. Japan 22, 431-442 (1970; Zbl 0195.32201)]. The author is interested in extending this idea to a quantum setting. For an \(N\)-th root of unity \(q\neq 1\), the author uses the methods of \textit{M. Kapranov} [On the \(q\)-analog of homological algebra, Math.~ArXiv q-alg/9611005], to contruct cohomology ``groups'' associated to a group \(\Gamma\) and complex \(\Gamma\)-module \(M\). More specifically, the analogue of the cohomology group \(H^p(\Gamma,M)\) is a set of \(N\) complex vector spaces. The author goes on to show that there is an action of a Hecke ring on these \(q\)-cohomology spaces.
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    quantum analogue of cohomology
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    Hecke operators
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    cohomology groups
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    Hecke rings
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    cohomology spaces
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