Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Tron Omland"'
Autor:
Erik Bédos, Tron Omland
We study C*-irreducibility of inclusions of reduced twisted group C*-algebras and of reduced group C*-algebras. We characterize C*-irreducibility in the case of an inclusion arising from a normal subgroup, and exhibit many new examples of C*-irreduci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59865d2f11673c52580d8c4d62f707a2
Autor:
Tron Omland
Publikováno v:
Proceedings of the American Mathematical Society
The free nilpotent group $G_{m,n}$ of class $m$ and rank $n$ is the free object on $n$ generators in the category of nilpotent groups of class at most $m$. We show that $G_{m,n}$ can be recovered from its reduced group $C^*$-algebra, in the sense tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5960ecdfe1265eac0d6ffc000f107e3b
https://doi.org/10.1090/proc/14678
https://doi.org/10.1090/proc/14678
Publikováno v:
Communications in Mathematical Physics
1263–1308
1263–1308
We study C*-algebras generated by left regular representations of right LCM one-relator monoids and Artin-Tits monoids of finite type. We obtain structural results concerning nuclearity, ideal structure and pure infiniteness. Moreover, we compute K-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::568bb281700b6053f0cf46d07fa2d593
https://eprints.gla.ac.uk/214027/1/214027.pdf
https://eprints.gla.ac.uk/214027/1/214027.pdf
Publikováno v:
Revista Colombiana de Matemáticas, Volume: 53 Supplement 1, Pages: 237-244, Published: 24 MAR 2020
espanolSi α es una accion de un grupo abeliano localmente compacto G sobre una C*-algebra A, la dualidad de Takesaki-Takai recupera (A, α), salvo equivalencia de Morita, de la accion dual de Ĝ sobre el producto cruzado A × α G. Mediante un poco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::954bb6358e38852981dcf630378666ea
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0034-74262019000300237&lng=en&tlng=en
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0034-74262019000300237&lng=en&tlng=en
Autor:
Tron Omland, Nikolay A. Ivanov
Publikováno v:
Journal of Functional Analysis. 272:3712-3741
We give new characterizations to ensure that a free product of groups with amalgamation has a simple reduced group C*-algebra, and provide a concrete example of an amalgam with trivial kernel, such that its reduced group C*-algebra has a unique traci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99639c3f61ff49c0f55f4416e1b1bc53
https://doi.org/10.1016/j.jfa.2016.12.011
https://doi.org/10.1016/j.jfa.2016.12.011
Publikováno v:
Annales de l'Institut Fourier
We study non-ascending HNN extensions acting on their Bass-Serre trees, and characterize C*-simplicity and the unique trace property by means of the kernel and quasi-kernels of the HNN extension in question. We also present a concrete example of an H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95a6dbadede24ac6958c99be6bdb2c92
http://hdl.handle.net/10852/85460
http://hdl.handle.net/10852/85460
Publikováno v:
Barlak, S, Omland, T & Stammeier, N 2018, ' On the K-theory of C∗-algebras arising from integral dynamics ', Ergodic Theory and Dynamical Systems, vol. 38, no. 3, pp. 832-862 . https://doi.org/10.1017/etds.2016.63
We investigate the $K$-theory of unital UCT Kirchberg algebras $\mathcal{Q}_S$ arising from families $S$ of relatively prime numbers. It is shown that $K_*(\mathcal{Q}_S)$ is the direct sum of a free abelian group and a torsion group, each of which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7353e0c7c736734d0fdd9536490468fa
https://doi.org/10.1017/etds.2016.63
https://doi.org/10.1017/etds.2016.63
Publikováno v:
Journal of the Australian Mathematical Society. 102:224-254
We present a new construction of crossed-product duality for maximal coactions that uses Fischer's work on maximalizations. Given a group $G$ and a coaction $(A,\delta)$ we define a generalized fixed-point algebra as a certain subalgebra of $M(A\rtim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e54319b13f55e10eed0009f6ea85a60c
https://doi.org/10.1017/s1446788716000215
https://doi.org/10.1017/s1446788716000215
Publikováno v:
International Journal of Mathematics
This is a follow-up to a paper with the same title and by the same authors. In that paper, all groups were assumed to be abelian, and we are now aiming to generalize the results to nonabelian groups. The motivating point is Pedersen's theorem, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7615b81138bf7bef92f0739109bf521d
http://arxiv.org/abs/1812.09939
http://arxiv.org/abs/1812.09939
Publikováno v:
Expositiones Mathematicae. 34:62-81
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68eeee3c7f0082a7d4b0cbf9f20cae66
https://doi.org/10.1016/j.exmath.2015.10.003
https://doi.org/10.1016/j.exmath.2015.10.003