A Riemann-Roch theorem for flat bundles, with values in the algebraic Chern-Simons theory
A Riemann-Roch theorem for flat bundles, with values in the algebraic Chern-Simons theory
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平丛的黎曼-罗赫定理,其值为代数陈-西蒙斯理论
DOI:
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发表时间:
1998
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影响因子:
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通讯作者:
H. Esnault
中科院分区:
文献类型:
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作者:
S. Bloch;H. Esnault
Our purpose in this paper is to continue the algebraic study of complex local systems on complex algebraic varieties. We prove a Riemann-Roch theorem for these objects using algebraic Chern-Simons characteristic classes. A complex local system E on a smooth, projective complex variety X gives rise to a locally free analytic sheaf Ean := E ⊗C Oan X which (using GAGA) admits a canonical algebraic structure E. The tautological analytic connection on E⊗CO X induces an integrable algebraic connection∇ : E → E⊗ΩX . Combining GAGA with the Poincare lemma, we see that the analytic cohomology of the local system can be identified with the hypercohomology of the algebraic de Rham complex