University of Illinois Urbana-Champaign

Congruences in modular, Jacobi, Siegel, and mock modular forms with applications

Dewar, Michael P.

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Dewar_Michael.pdf

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https://hdl.handle.net/2142/16054

Description

Title
Congruences in modular, Jacobi, Siegel, and mock modular forms with applications
Author(s)
Dewar, Michael P.
Issue Date
2010-05-19T18:33:30Z
Director of Research (if dissertation) or Advisor (if thesis)
Ahlgren, Scott
Doctoral Committee Chair(s)
Berndt, Bruce C.
Committee Member(s)
  • Ahlgren, Scott
  • Dunfield, Nathan M.
  • Zaharescu, Alexandru
Department of Study
Mathematics
Discipline
Mathematics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Date of Ingest
2010-05-19T18:33:30Z
Keyword(s)
  • Ramanujan congruences
  • Tate cycle
  • heat cycle
  • Fourier coefficients
  • Modular forms
  • reduced modular forms
  • Jacobi forms
  • Siegel modular forms
Abstract
We study congruences in the coefficients of modular and other automorphic forms. Ramanujan famously found congruences for the partition function like p(5n+4) = 0 mod 5. For a wide class of modular forms, we classify the primes for which there can be analogous congruences in the coefficients of the Fourier expansion. We have several applications. We describe the Ramanujan congruences in the counting functions for overparitions, overpartition pairs, crank differences, and Andrews' two-coloured generalized Frobenius partitions. We also study Ramanujan congruences in the Fourier coefficients of certain ratios of Eisenstein series. We also determine the exact number of holomorphic modular forms with Ramanujan congruences when the weight is large enough. In a chapter based on joint work with Olav Richter, we study Ramanujan congruences in the coefficients of Jacobi forms and Siegel modular forms of degree two. Finally, the last chapter contains a completely unrelated result about harmonic weak Maass forms.
Graduation Semester
2010-5
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http://hdl.handle.net/2142/16054
Copyright and License Information
Copyright Michael P. Dewar

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