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Determinants of zeroth order operators

Friedlander, L (Arizona)
Tuesday 25 July 2006, 16:30-17:20

Seminar Room 1, Newton Institute


This is a joint work with Victor Guillemin. We compare two ways of regularizing the determinant of a pseudo-differential operator of zeroth order. The first way is based on a generalization of Szego's strong limit theorem; the second regularization uses a generalized zeta-function. Both regularizations of the determinant are non-local, and they give different answers. However, and this is our main result, the ratio of them is a local quantity.

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