Mixed Hodge structures and E-polynomials

Authors

  • Allan F. Murillo Badilla Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada, San José, Costa Rica Author

DOI:

https://doi.org/10.15517/0ak77e66

Keywords:

E-polynomials, Hodge polynomials, Mixed Hodge structures, Moduli spaces

Abstract

We provide a self-contained review of mixed Hodge structures (MHS) with a focus on the computation of E-polynomials for complex quasi-projective varieties. We discuss the discrepancy between MHS on diffeomorphic varieties, specifically for the cotangent bundle of an abelian variety. Furthermore, we compute the E-polynomials for S Ln(C) and PGLn(C) and explore the link between these invariants and point-counting over finite fields.

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References

P. Deligne, Théorie de Hodge: II. Publications Mathématiques de l’IHÉS 40(1971), 5–57. doi: 10.1007/bf02684692 DOI: https://doi.org/10.1007/BF02684692

C. Florentino, A. Nozad, J. Silva, A. Zamora, On Hodge Polynomials of Singular Character Varieties. P. Cerejeiras, M. Reissig, I. Sabadini, J. Toft (Eds.). Current Trends in Analysis, its Applications and Computation. Birkhäuser, Cham, 2022, 99–110. doi: 10.1007/978-3-030-87502-2 11 DOI: https://doi.org/10.1007/978-3-030-87502-2_11

C. Florentino, A. Nozad, A. Zamora, Serre polynomials of S Ln− and PGLn−character varieties of free groups. Journal of Geometry and Physics 161(2021), 104008. doi: 10.1016/j.geomphys.2020.104008 DOI: https://doi.org/10.1016/j.geomphys.2020.104008

T. Hausel, F. Rodriguez-Villegas, Mixed Hodge polynomials of character varieties. With an appendix by Nicholas M. Katz. Inventiones mathematicae 174(2008), no. 3, 555–624. doi: 10.1007/s00222-008-0142-x DOI: https://doi.org/10.1007/s00222-008-0142-x

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Published

2026-07-31

How to Cite

Mixed Hodge structures and E-polynomials. (2026). Revista De Matemática: Teoría Y Aplicaciones, 33(2), 193-205. https://doi.org/10.15517/0ak77e66