Journal
JOURNAL FUR DIE REINE UND ANGEWANDTE MATHEMATIK
Volume 2022, Issue 786, Pages 107-153Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/crelle-2022-0003
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Funding
- JSPS KAKENHI [20J00922]
- Grants-in-Aid for Scientific Research [20J00922] Funding Source: KAKEN
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In this paper, we study the decomposition of monodromic D-modules and mixed Hodge modules on a smooth algebraic variety, as well as the equivalence between the category of monodromic mixed Hodge modules and the category of gluing data. We also provide a mixed Hodge module structure for the Fourier-Laplace transformation of the underlying D-module of a monodromic mixed Hodge module.
For a smooth algebraic variety X, a monodromic D-module on X x C is decomposed into a direct sum of some D-modules on X. We show that the Hodge filtration of a mixed IIodge module on X x C 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 x C 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.
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