Zobrazeno 1 - 10
of 7 802
pro vyhledávání: '"Vilalta, A."'
We give an explicit criterion for a rational lattice in the time-frequency plane to admit a Gabor frame with window in the Schwartz class. The criterion is an inequality formulated in terms of the lattice covolume, the dimension of the underlying Euc
Externí odkaz:
http://arxiv.org/abs/2408.03423
We show that every C*-algebra that is (m,n)-pure in the sense of Winter is already pure, that is, its Cuntz semigroup is almost unperforated and almost divisible. More generally, we show that even weaker comparison and divisibility properties automat
Externí odkaz:
http://arxiv.org/abs/2406.11052
Autor:
Bosa, Joan, Vilalta, Eduard
We introduce and study a notion of pureness for *-homomorphisms and, more generally, for cpc. order-zero maps. After providing several examples of pureness, such as "$\mathcal{Z}$-stable"-like maps, we focus on the question of when pure maps factor t
Externí odkaz:
http://arxiv.org/abs/2406.10949
Autor:
Rajput, Kishansingh, Schram, Malachi, Blokland, Willem, Alanazi, Yasir, Ramuhalli, Pradeep, Zhukov, Alexander, Peters, Charles, Vilalta, Ricardo
Particle accelerators are complex and comprise thousands of components, with many pieces of equipment running at their peak power. Consequently, particle accelerators can fault and abort operations for numerous reasons. These faults impact the availa
Externí odkaz:
http://arxiv.org/abs/2312.10040
We show that for C*-algebras with the Global Glimm Property, the rank of every operator can be realized as the rank of a soft operator, that is, an element whose hereditary sub-C*-algebra has no nonzero, unital quotients. This implies that the radius
Externí odkaz:
http://arxiv.org/abs/2310.00663
Publikováno v:
International Journal of Manpower, 2023, Vol. 45, Issue 5, pp. 908-925.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/IJM-02-2023-0080
Autor:
Cantier, Laurent, Vilalta, Eduard
We introduce a Fra\"iss\'e theory for abstract Cuntz semigroups akin to the theory of Fra\"iss\'e categories developed by Kubi\'s. In particular, we show that any (Cuntz) Fra\"iss\'e category has a unique Fra\"iss\'e limit which is both universal and
Externí odkaz:
http://arxiv.org/abs/2308.15792
During a screening in ASAS-SN database searching candidates of Delta Scuti stars with short period, our attention was drawn to the variable star ASASSN-V J104912.47+274312.7, we considered interesting to follow. It is an ASAS-SN discovery, classified
Externí odkaz:
http://arxiv.org/abs/2307.14875
For any ring $R$, we introduce an invariant in the form of a partially ordered abelian semigroup $\mathrm{S}(R)$ built from an equivalence relation on the class of countably generated projective modules. We call $\mathrm{S}(R)$ the Cuntz semigroup of
Externí odkaz:
http://arxiv.org/abs/2307.07266
Autor:
N. Trajtenberg, S. Fossati, C. Diaz, A. E. Nivette, R. Aguilar, A. Ahven, L. Andrade, S. Amram, B. Ariel, M. J. Arosemena Burbano, R. Astolfi, D. Baier, H.-M. Bark, J. E. H. Beijers, M. Bergman, D. Borges, G. Breeztke, I. Cano, I. A. Concha Eastman, S. Curtis-Ham, R. Davenport, C. Droppelman, D. Fleitas, M. Gerell, K.-H. Jang, J. Kääriäinen, T. Lappi-Seppälä, W.-S. Lim, R. Loureiro Revilla, L. Mazerolle, C. Mendoza, G. Meško, N. Pereda, M. F. Peres, R. Poblete-Cazenave, E. Rojido, S. Rose, O. Sanchez de Ribera, R. Svensson, T. van der Lippe, J. A. M. Veldkamp, C. J. Vilalta Perdomo, R. Zahnow, M. P. Eisner
Publikováno v:
Crime Science, Vol 13, Iss 1, Pp 1-12 (2024)
Abstract There is a vast literature evaluating the empirical association between stay-at-home policies and crime during the COVID-19 pandemic. However, these academic efforts have primarily focused on the effects within specific cities or regions rat
Externí odkaz:
https://doaj.org/article/8eff9a2017844781bc678a52c2529b17