Bernoulli numbers and deformations of schemes and maps
Ziv Ran
Abstract
We introduce a notion of Jacobi-Bernoulli cohomology associated to a semi-simplicial Lie algebra (SELA). For an algebraic scheme X over , we construct a tangent SELA X and show that the Jacobi-Bernoulli cohomology of X is related to infinitesimal deformations of X.
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