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Séminaire de Théorie des Nombres

Some new results on the j-invariant

Ozlem Imamoglu

Salle de Conférences

le 27 mars 2009 à 14:00

Singular moduli is the classical name for the values of the jj function at imaginary quadratic irrationalities. They are algebraic numbers that play an important role in number theory and have been studied since Kronecker and Weber. In the 1990s Borcherds and Zagier established some beautiful connections between the traces of singular moduli, infinite products and weakly holomorphic modular forms of half-integral weight. In this talk I will report on joint work with W. Duke and A. Toth where we consider cycles integrals of the jj function, which can be thought as real quadratic analogues of singular moduli.