The equivariant cohomological realization conjecture for local Dahmen–Micchelli modules

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Let GG be the compact abelian group, with Lie algebra [?][?]; let XX be the finite list or configuration used to define the local Dahmen–Micchelli module DT(X)D_{\mathcal T}(X), and let MXTM_X^{\mathcal T} be the corresponding submanifold associated with a semilocal set T⊆2X\mathcal T\subseteq 2^X. The cotangent bundle is taken in the equivariant sense, TG∗MXTT_G^*M_X^{\mathcal T}, and S[g∗]S[\mathfrak g^*] denotes the symmetric algebra on g∗\mathfrak g^*, with its natural grading. The set T\mathcal T is semilocal if it is closed under taking supersets and there exists a big cell Ω\Omega such that

L(X)⊆T⊆LΩ(X).L(X)\subseteq \mathcal T\subseteq L_\Omega(X).

Equivariant cohomological realization conjecture. For every semilocal T\mathcal T, there is an isomorphism of graded S[g∗]S[\mathfrak g^*]-modules

HG∗(TG∗MXT)≅DT(X)H_G^*(T_G^*M_X^{\mathcal T})\cong D_{\mathcal T}(X)

that is given by the infinitesimal index.

This is the cohomological analogue of the preceding theorem, which establishes the corresponding realization for the equivariant KK-theory module DMT(X)DM_{\mathcal T}(X). The authors indicate that analogous methods should prove the statement, but the conjecture itself is presented as an assertion whose proof is not supplied in the source.

References

Primary source

Francesco Cavazzani and Luca Moci, “Geometric realizations and duality for Dahmen-Micchelli modules and De Concini-Procesi-Vergne modules”, arXiv:1303.0902 (2015).

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