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Enhanced specialization and microlocalization

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Abstract

Enhanced ind-sheaves provide a suitable framework for the irregular Riemann–Hilbert correspondence. In this paper, we show how Sato’s specialization and microlocalization functors have a natural enhancement, and discuss some of their properties.

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Notes

  1. We abusively call sheaf an object of the bounded derived category \(\mathrm {D}^{\mathrm {b}}(\mathbf {k}_M)\) of sheaves of \(\mathbf {k}\)-vector spaces on M, for a fixed base field \(\mathbf {k}\).

  2. Here we choose a different compactification from the one in [2, §B.2].

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Correspondence to Andrea D’Agnolo.

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The research of A.D’A. was partially supported by GNAMPA/INdAM. He acknowledges the kind hospitality at RIMS of Kyoto University during the preparation of this paper.

The research of M.K. was supported by Grant-in-Aid for Scientific Research (B) 15H03608, Japan Society for the Promotion of Science.

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D’Agnolo, A., Kashiwara, M. Enhanced specialization and microlocalization. Sel. Math. New Ser. 27, 7 (2021). https://doi.org/10.1007/s00029-020-00613-2

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