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From Jantzen to Andersen Filtration via Tilting Equivalence
Jantzen Andersen Filtration via Tilting Equivalence
2010/11/12
The space of homomorphisms from a projective object to a Verma module in category O inherits an induced filtration from the Jantzen filtration on the Verma module. On the other hand there is the Ande...
Equivalence of domains for hyperbolic Hubbard-Stratonovich transformations
hyperbolic Hubbard-Stratonovich transformations math
2010/11/11
We settle a long standing issue concerning the traditional derivation of non-compact non-linear sigma models in the theory of disordered electron systems: the hyperbolic Hubbard-Stratonovich (HS) tran...
We prove that existence of a k-rational point can be detected by the stable A^1-homotopy category of S^1-spectra
BFV-BRST analysis of equivalence between noncommutative and ordinary gauge theories
BFV-BRST analysis equivalence noncommutative ordinary gauge theories
2010/11/2
Constrained hamiltonian structure of noncommutative gauge theory for the gauge group U(1) is discussed. Constraints are shown to be first class, although, they do not give an Abelian algebra in terms...