Journal of the Korean Mathematical Society (대한수학회지)

Korean Mathematical Society (대한수학회)
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COMPUTATIONS OF SPACES OF PARAMODULAR FORMS OF GENERAL LEVEL

  • Breeding, Jeffery II (Department of Mathematics Fordham University) ;
  • Poor, Cris (Department of Mathematics Fordham University) ;
  • Yuen, David S. (Department of Mathematics and Computer Science Lake Forest University)
  • Received : 2015.04.04
  • Published : 2016.05.01
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Abstract

This article gives upper bounds on the number of Fourier-Jacobi coefficients that determine a paramodular cusp form in degree two. The level N of the paramodular group is completely general throughout. Additionally, spaces of Jacobi cusp forms are spanned by using the theory of theta blocks due to Gritsenko, Skoruppa and Zagier. We combine these two techniques to rigorously compute spaces of paramodular cusp forms and to verify the Paramodular Conjecture of Brumer and Kramer in many cases of low level. The proofs rely on a detailed description of the zero dimensional cusps for the subgroup of integral elements in each paramodular group.

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References

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