2,678 research outputs found
The motion of stars in galaxies and the gravitational time dilatation
This article deals with the problem of the motion of stars in galaxies. By
using the Newton's theory combined with a gravitational time dilatation for the
weak gravitational field, it is possible to give a solution without using the
dark matter
Time-dependent cosmological interpretation of quantum mechanics
The aim of this article is to define a time-dependent cosmological
interpretation of quantum mechanics in the context of an infinite open FLRW
universe. A time-dependent quantum state is defined for observers in similar
observable universes by using the particle horizon. Then, we prove that the
wave function collapse of this quantum state is avoided.Comment: 8 page
Homology of algebras of families of pseudodifferential operators
We compute the Hochschild, cyclic, and periodic cyclic homology groups of
algebras of families of Laurent complete symbols on manifolds with corners. We
show in particular that the spectral sequence associated with Hochschild
homology degenerates at and converges to Hochschild homology. As a
byproduct, we deduce an identification of the space of residue traces on
fibrations by manifolds with corners. In the process, we prove several general
results about algebras of complete symbols on manifolds with corners.Comment: 29 pages, LaTe
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