Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Vrej Zarikian"'
Publikováno v:
Bulletin of the London Mathematical Society.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e853110e740c73c46fe580da8d7b81d3
https://doi.org/10.1112/blms.12805
https://doi.org/10.1112/blms.12805
Autor:
Vrej Zarikian
Publikováno v:
Ann. Funct. Anal. 10, no. 1 (2019), 60-71
Let $G$ be a discrete group acting on a unital $C^*$-algebra $\mathcal{A}$ by $*$-automorphisms. We characterize (in terms of the dynamics) when the inclusion $\mathcal{A} \subseteq \mathcal{A} \rtimes_r G$ has a unique conditional expectation, and w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b196b77bf45d84e5c9957b74ff56f155
https://doi.org/10.1215/20088752-2018-0008
https://doi.org/10.1215/20088752-2018-0008
Autor:
Vrej Zarikian
Let $j:Y \to X$ be a continuous surjection of compact metric spaces. Whyburn proved that $j$ is irreducible, meaning that $j(F) \subsetneq X$ for any proper closed subset $F \subsetneq Y$, if and only if $j$ is almost one-to-one, in the sense that \[
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1df27e7cb0d461bf8656be827a08de1e
http://arxiv.org/abs/2011.13460
http://arxiv.org/abs/2011.13460
Autor:
Vrej Zarikian
Let $D \subseteq A$ be an inclusion of unital abelian $C^*$-algebras. In this note we characterize (in topological terms) when there is a unique conditional expectation $E:A \to D$, at least when $A$ is separable. As an application, we provide the fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e5a71db02226bf3dca90a172d3a6833
Autor:
Vrej Zarikian, Gary Weiss
Publikováno v:
Operators and Matrices. :301-352
We compute paving parameters for classes of small matrices and the matrices that yield them. The convergence to 1 or not of the sequence of these parameters is equivalent to the Kadison-Singer Extension Problem. Mathematics subject classification (20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34c4b1e1c9f1fcb39592de55194d149e
https://doi.org/10.7153/oam-04-17
https://doi.org/10.7153/oam-04-17
Autor:
David R. Pitts, Vrej Zarikian
Publikováno v:
Illinois J. Math. 59, no. 2 (2015), 449-483
Given an inclusion D $\subseteq$ C of unital C*-algebras, a unital completely positive linear map $\Phi$ of C into the injective envelope I(D) of D which extends the inclusion of D into I(D) is a pseudo-expectation. The set PsExp(C,D) of all pseudo-e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfe1595f5a8540b916386bc78c996504
http://projecteuclid.org/euclid.ijm/1462450709
http://projecteuclid.org/euclid.ijm/1462450709
Autor:
Vrej Zarikian
Publikováno v:
Linear Algebra and its Applications. 419:710-734
We show how alternating-projection algorithms can be used to solve a variety of operator-theoretic problems, including deciding complete positivity, computing completely bounded norms, computing norms of Schur multipliers, and matrix completion/appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11f0ad3dab24617d8e783e645e65ff90
https://doi.org/10.1016/j.laa.2006.06.012
https://doi.org/10.1016/j.laa.2006.06.012
Autor:
David P. Blecher, Vrej Zarikian
The theory of one-sided $M$-ideals and multipliers of operator spaces is simultaneously a generalization of classical $M$-ideals, ideals in operator algebras, and aspects of the theory of Hilbert $C^•$-modules and their maps. Here we give a systema
Publikováno v:
Pacific Journal of Mathematics. 206:287-319
The theory of M-ideals and multiplier mappings of Banach spaces naturally generalizes to left (or right) M-ideals and multiplier mappings of operator spaces. These subspaces and mappings are intrinsically characterized in terms of the matrix norms. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e13aa39800404e7411354948e2d8757
https://doi.org/10.2140/pjm.2002.206.287
https://doi.org/10.2140/pjm.2002.206.287
Publikováno v:
International Journal for Numerical Methods in Engineering. 39:2005-2029
SUMMARY This paper presents a new approach for a posteriori 'pointwise' error estimation in the boundary element method. The estimator relies upon evaluation of the residual of hypersingular integral equations, and is therefore intrinsic to the bound
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5726973ba36169233fd9881b5cc8c769
https://doi.org/10.1002/(sici)1097-0207(19960630)39:12<2005::aid-nme940>3.0.co
https://doi.org/10.1002/(sici)1097-0207(19960630)39:12<2005::aid-nme940>3.0.co