139,969 research outputs found
Spaces of graphs, boundary groupoids and the coarse Baum-Connes conjecture
No full textWe introduce a new variant of the coarse Baum–Connes conjecture designed to tackle coarsely disconnected metric spaces called the boundary coarse Baum–Connes conjecture. We prove this conjecture for many coarsely disconnected spaces that are known to be counterexamples to the coarse Baum–Connes conjecture. In particular, we give a geometric proof of this conjecture for spaces of graphs that have large girth and bounded vertex degree. We then connect the boundary conjecture to the coarse Baum–Connes conjecture using homological methods, which allows us to exhibit all the current uniformly discrete counterexamples to the coarse Baum–Connes conjecture in an elementary way
Quantum SU(2) and the Baum-Connes conjecture
No full textWe review the formulation and proof of the Baum-Connes conjecture for the dual of the quantum group of Woronowicz. As an illustration of this result we determine the -groups of quantum automorphism groups of simple matrix algebras
The Baum-Connes conjecture for free orthogonal quantum groups
No full textWe prove an analogue of the Baum–Connes conjecture for free orthogonal quantum groups. More precisely, we show that these quantum groups have a γ-element and that γ=1. It follows that free orthogonal quantum groups are K-amenable. We compute explicitly their K-theory and deduce in the unimodular case that the corresponding reduced C<sup>⁎</sup>-algebras do not contain nontrivial idempotents.
Our approach is based on the reformulation of the Baum–Connes conjecture by Meyer and Nest using the language of triangulated categories. An important ingredient is the theory of monoidal equivalence of compact quantum groups developed by Bichon, De Rijdt and Vaes. This allows us to study the problem in terms of the quantum group SUq(2). The crucial part of the argument is a detailed analysis of the equivariant Kasparov theory of the standard Podleś sphere
The spin dependence of the excitation of metastable autoionising lithium 4P states by electron impact
No full textBaum G, Raith W, Schröder W. The spin dependence of the excitation of metastable autoionising lithium 4P states by electron impact. J.Phys. B. 1988;21(16):L501-L507
Measurement of spin asymmetries in the electron impact ionisation of alkali atoms
No full textBaum G, Moede M, Raith W, Schröder W. Measurement of spin asymmetries in the electron impact ionisation of alkali atoms. J.Phys. B. 1985;18(3):531-538
Bredon homology and equivariant K-homology of SL(3,Z)
No full textWe obtain the equivariant K-homology of the classifying space underline{E}SL(3,Z) from the computation of its Bredon homology with respect to finite subgroups and coefficients in the representation ring. We also obtain the corresponding results for GL(3,Z). Our calculations give therefore the topological side of the Baum-Connes conjecture for these group
Geometric structure in smooth dual and local Langlands conjecture
No full textThis expository paper first reviews some basic facts about p-adic fields, reductive p-adic groups, and the local Langlands conjecture. If G is a reductive p-adic group, then the smooth dual of G is the set of equivalence classes of smooth irreducible representations of G. The representations are on vector spaces over the complex numbers. In a canonical way, the smooth dual is the disjoint union of subsets known as the Bernstein components. According to a conjecture due to ABPS (Aubert–Baum–Plymen–Solleveld), each Bernstein component has a geometric structure given by an appropriate extended quotient. The paper states this ABPS conjecture and then indicates evidence for the conjecture, and its connection to the local Langlands conjecture
D-0785-1: Logan, Utah, Baum Motor Company
No full textD-0785-1: Logan, Utah, Baum Motor Company (Negative Available
MS 124 Guide to the John Baum MD Papers (1974-1984)
No full textThe collection consists of two boxes. The bulk of the material in the collection is related to the U.S.-U.S.S.R. collaborative study on the effectiveness of d-Penicillamine in treating juvenile arthritis. Box I contains correspondence among Dr. Baum and other doctors, dating from 1974 through 1984 and organized chronologically by year. See more at MS 124
D-0801-2: Logan, Utah, Oil service station, Baum Motors
No full textD-0801-2: Logan, Utah, Oil service station, Baum Motors (Negative Available
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