• 제목/요약/키워드: $S_{r}(\wedge^2 \varphi)$

검색결과 1건 처리시간 0.017초

GLn- DECOMPOSITION OF THE SCHUR COMPLEX Sr2 φ)

  • Choi, Eun J.;Kim, Young H.;Ko, Hyoung J.;Won, Seoung J.
    • 대한수학회보
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    • 제40권1호
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    • pp.29-51
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    • 2003
  • In this paper we construct a natural filtration associated to the plethysm $S_{r}(\wedge^2 \varphi)$ over arbitrary commutative ring R. Let $\phi$ : G longrightarrow F be a morphism of finite free R-modules. We construct the natural filtration of $S_{r}(\wedge^2 \varphi)$ as a $GL(F){\times}GL(G)$- complex such that its associated graded complex is ${\Sigma}_{{\lambda}{\in}{\Omega}_{\gamma}}=L_{2{\lambda}{\varphi}$, where ${{\Omega}_{\gamma}}^{-}$ is a set of partitions such that $│\wedge│\;=;{\gamma}\;and\;2{\wedge}$ is a partition of which i-th term is $2{\wedge}_{i}$. Specializing our result, we obtain the filtrations of $S_{r}(\wedge^2 F)\;and\;D_{r}(D_2G).