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Almost commutative Riemannian geometry, I: wave operators
noncommutative geometry quantum groups quantum gravity
2010/12/3
Associated to any (pseudo)-Riemannian manifold M of dimension n is an n + 1-dimensional noncommutative dierential structure (1; d)on the manifold.
On the wave operators and Levinson's theorem for potential scattering in R^3
wave operators Levinson's theorem potential scattering
2010/12/13
The paper is a presentation of recent investigations on potential scattering in R3. We advocate a new formula for the wave operators and deduce the various outcomes that follow
from this formula. A t...