Ben-Zvi's microlocal homology invariance conjecture

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Let XX be a smooth ambient space, let ff define the derived zero locus Z(f)\boldsymbol{Z}(f), and let V∨V^{\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,d4aa′⊂V∨d4aa,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

MΛf≃MΛ′f.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.

References

Primary source

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

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