Peter Sarnak

Affiliation: Institute for Advanced Study, Princeton and Prince

Title Of Talk: On indefinite ternary quadratic forms

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Abstract: We describe the solution to two problems concerning indefinite integral ternary quadratic forms. The first about anisotropic forms was popularized by Margulis following his solution of the Oppenheim Conjecture. The second about the density of isotropic forms was raised by Serre. Joint work with A.Gamburd, A.Ghosh and J.Whang.

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