Kontsevich's tangent-map conjecture for formality quasi-isomorphisms

Let XX be a smooth super-manifold, and let Tpoly(X)T^\bullet_{\mathrm{poly}}(X) and Dpoly(X)\mathcal D^\bullet_{\mathrm{poly}}(X) denote the differential graded Lie algebras of smooth polyvector fields and smooth polydifferential operators. Let U:Tpoly(X)Dpoly(X)\mathcal U:T^\bullet_{\mathrm{poly}}(X)\to\mathcal D^\bullet_{\mathrm{poly}}(X) be an LL_\infty-quasi-isomorphism constructed in Section 7 of [K1]. For γTpoly1(X)\gamma\in T^1_{\mathrm{poly}}(X) satisfying

[γ,γ]=0,[\gamma,\gamma]=0,

let TγT_\gamma denote the tangent complex at γ\gamma and let Uγ\mathcal U_\gamma be the tangent map.

Kontsevich's tangent-map conjecture. The induced map

[Uγ]:HTγ(Tpoly(X))HTU(γ)(Dpoly(X))[\mathcal U_\gamma]:H^\bullet T_\gamma(T^\bullet_{\mathrm{poly}}(X))\to H^\bullet T_{\mathcal U(\gamma)}(\mathcal D^\bullet_{\mathrm{poly}}(X))

is a morphism of algebras. The conjecture is the formality statement required to obtain a multiplicative Duflo-type map after twisting by a Maurer–Cartan element; its resolution status is not specified in the source.

Sources & referencesView supporting material

Primary source

Boris Shoikhet, “On the Duflo formula for L_-algebras and Q-manifolds”, arXiv:math/9812009 (1998).

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