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A description of monodromic mixed Hodge modules

  • Takahiro Saito EMAIL logo
Published/Copyright: February 25, 2022

Abstract

For a smooth algebraic variety X, a monodromic D-module on X × is decomposed into a direct sum of some D-modules on X. We show that the Hodge filtration of a mixed Hodge module on X × whose underlying D-module is monodromic is also decomposed. Moreover, we show that there is an equivalence of categories between the category of monodromic mixed Hodge modules on X × and the category of “gluing data”. As an application, we endow the Fourier–Laplace transformation of the underlying D-module of a monodromic mixed Hodge module with a mixed Hodge module structure.

Award Identifier / Grant number: 20J00922

Funding statement: This work is supported by JSPS KAKENHI Grant Number 20J00922.

Acknowledgements

A part of this study was done while the author was visiting CMLS, École polytechnique from April to October 2018, whose hospitality is gratefully acknowledged. Another part was fruitfully conducted while he went to University of Tsukuba until March 2020. The author would like to express his sincere gratitude to Professor Claude Sabbah for suggesting the problem treated in this paper, having stimulating discussions and answering many questions. Moreover, the author would like to thank him for a careful reading of the manuscript and valuable suggestions. He would like to express appreciation to Professor Takuro Mochizuki for inspiring discussions and helpful advice. He wishes to thank Tatsuki Kuwagaki for fruitful conversations. His thanks go also to Yuichi Ike for answering his questions. He would like to thank Professor Kiyoshi Takeuchi for his constant encouragement. He also thanks the referee for useful comments.

References

[1] S. Alexander, 𝒟 -modules and hodge theory, preprint, https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.488.5103&rep=rep1&type=pdf. Search in Google Scholar

[2] A. A. Beĭlinson, How to glue perverse sheaves, K-theory, arithmetic and geometry (Moscow 1984–1986), Lecture Notes in Math. 1289, Springer, Berlin (1987), 42–51. 10.1007/BFb0078366Search in Google Scholar

[3] S. R. Bell, J.-L. Brylinski, A. T. Huckleberry, R. Narasimhan, C. Okonek, G. Schumacher, A. Van de Ven and S. Zucker, Complex manifolds, Springer, Berlin 1998. 10.1007/978-3-642-61299-2Search in Google Scholar

[4] J.-L. Brylinski, Transformations canoniques, dualité projective, théorie de Lefschetz, transformations de Fourier et sommes trigonométriques, Géométrie et analyse microlocales, Astérisque 140–141, Société Mathématique de France, Paris (1986), 3–134. Search in Google Scholar

[5] P. Deligne, Un théorème de finitude pour la monodromie, Discrete groups in geometry and analysis (New Haven 1984), Progr. Math. 67, Birkhäuser, Boston (1987), 1–19. 10.1007/978-1-4899-6664-3_1Search in Google Scholar

[6] H. Esnault, C. Sabbah and J.-D. Yu, E 1 -degeneration of the irregular Hodge filtration, J. reine angew. Math. 729 (2017), 171–227. 10.1515/crelle-2014-0118Search in Google Scholar

[7] V. Ginsburg, Characteristic varieties and vanishing cycles, Invent. Math. 84 (1986), no. 2, 327–402. 10.1007/BF01388811Search in Google Scholar

[8] R. Hotta, K. Takeuchi and T. Tanisaki, D-modules, perverse sheaves, and representation theory, Progr. Math. 236, Birkhäuser, Boston 2008. 10.1007/978-0-8176-4523-6Search in Google Scholar

[9] M. Kashiwara, Vanishing cycle sheaves and holonomic systems of differential equations, Algebraic geometry (Tokyo/Kyoto 1982), Lecture Notes in Math. 1016, Springer, Berlin (1983), 134–142. 10.1007/BFb0099962Search in Google Scholar

[10] M. Kashiwara and P. Schapira, Sheaves on manifolds, Grundlehren Math. Wiss. 292, Springer, Berlin 1990. 10.1007/978-3-662-02661-8Search in Google Scholar

[11] P. Maisonobe and Z. Mebkhout, Le théorème de comparaison pour les cycles évanescents, Éléments de la théorie des systèmes différentiels géométriques, Sémin. Congr. 8, Société Mathématique de France, Paris (2004), 311–389. Search in Google Scholar

[12] Z. Mebkhout, Le théorème de comparaison entre cohomologies de de Rham d’une variété algébrique complexe et le théorème d’existence de Riemann, Publ. Math. Inst. Hautes Études Sci. 69 (1989), 47–89. 10.1007/BF02698840Search in Google Scholar

[13] T. Reichelt, Laurent polynomials, GKZ-hypergeometric systems and mixed Hodge modules, Compos. Math. 150 (2014), no. 6, 911–941. 10.1112/S0010437X13007744Search in Google Scholar

[14] T. Reichelt and U. Walther, Weight filtrations on GKZ-systems, preprint (2018), https://arxiv.org/abs/1809.04247. 10.1353/ajm.2022.0033Search in Google Scholar

[15] C. Sabbah, Hodge theory, singularities and D-modules, preprint (2007), http://www.cmls.polytechnique.fr/perso/sabbah/livres/sabbah\_luminy07.pdf. Search in Google Scholar

[16] C. Sabbah, Irregular Hodge theory, Mém. Soc. Math. Fr. (N. S.) 156 (2018), 1–126. 10.24033/msmf.464Search in Google Scholar

[17] C. Sabbah and C. Schnell, The MHM Project, http://www.cmls.polytechnique.fr/perso/sabbah/MHMProject/mhm.html. Search in Google Scholar

[18] C. Sabbah and J.-D. Yu, On the irregular Hodge filtration of exponentially twisted mixed Hodge modules, Forum Math. Sigma 3 (2015), Paper No. e9. 10.1017/fms.2015.8Search in Google Scholar

[19] M. Saito, Modules de Hodge polarisables, Publ. Res. Inst. Math. Sci. 24 (1988), no. 6, 849–995. 10.2977/prims/1195173930Search in Google Scholar

[20] M. Saito, Mixed Hodge modules, Publ. Res. Inst. Math. Sci. 26 (1990), no. 2, 221–333. 10.2977/prims/1195171082Search in Google Scholar

[21] M. Saito, A young person’s guide to mixed Hodge modules, Hodge theory and L 2 -analysis, Adv. Lect. Math. (ALM) 39, International Press, Somerville (2017), 517–553. Search in Google Scholar

[22] W. Schmid, Variation of Hodge structure: The singularities of the period mapping, Invent. Math. 22 (1973), 211–319. 10.1007/BF01389674Search in Google Scholar

[23] C. Schnell, An overview of Morihiko Saito’s theory of mixed Hodge modules, Representation theory, automorphic forms & complex geometry, International Press, Somerville (2019), 27–80. Search in Google Scholar

[24] L. Wu, Nearby and vanishing cycles for perverse sheaves and d-modules, preprint (2017), https://arxiv.org/abs/1709.10158. Search in Google Scholar

Received: 2021-01-11
Published Online: 2022-02-25
Published in Print: 2022-05-01

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