Ben-Zvi's microlocal homology invariance conjecture

Let XX be a smooth ambient space, let ff define the derived zero locus Z(f)\boldsymbol{Z}(f), and let VV^{\vee} be the ambient dual vector space. The source gives a closed immersion

T[1]Z(f)Z(f)×V.T^*[-1]\boldsymbol{Z}(f)\hookrightarrow Z(f)\times V^{\vee}.

For d4aa,d4aaVd4aa,d4aa'\subset V^{\vee}, define

d4aa~:=T[1]Z(f)(Z(f)\timesd4aa).\widetilde{d4aa}:=T^*[-1]\boldsymbol{Z}(f)\cap (Z(f)\timesd4aa).

Let MΛfM_{\Lambda}^f be the microlocal homology associated to Λ\Lambda. Ben-Zvi's invariance conjecture. If Λ~=Λ~\widetilde{\Lambda}=\widetilde{\Lambda'}, then

MΛfMΛf.M_{\Lambda}^f\simeq M_{\Lambda'}^f.

The conjecture says that microlocal homology depends only on the part of the parameter set intersecting the scheme of singularities of Z(f)\boldsymbol{Z}(f), viewed in the indicated trivial family over Z(f)Z(f); the source gives no evidence of a proof or disproof.

Sources & referencesView supporting material

Primary source

Kendric Schefers, “Microlocal homology”, arXiv:2205.12436 (2025).

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