DATE: Tuesday, January 19 (2010), at 12:50pm
PLACE: LIT 305
SPEAKER: Alexander Berkovich
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TITLE:
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Number of roots of a quadratic congruence
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ABSTRACT:
I will discuss simple counting formulas
for
x2 == d mod ph.
Here p is some prime. I will show how this counting leads to famous
Dirichlet's formula for positive binary quadratic forms.
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