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math.NT2007
Hecke operators and Hilbert modular forms
Paul E. Gunnells, Dan Yasaki
Let F be a real quadratic field with ring of integers O and with class number 1. Let Gamma be a congruence subgroup of GL_2 (O). We describe a technique to compute the action of th…
math.NT2007
Integral cohomology of certain Picard modular surfaces
Dan Yasaki
Let Gamma be a congruence subgroup of the Picard modular group of an imaginary number field k, and let D be the associated symmetric space. We describe a method to compute the inte…
math.NT2007
The elliptic fixed points of the Picard modular group over the Gaussian integers
Dan Yasaki
We explicitly compute the ellitpic points and isotropy groups for the action of the Picard modular group over the Gaussian integers on 2-dimensional complex hyperbolic space.