Results 21 to 30 of about 43,719 (310)

On uniformly locally compact quasi-uniform hyperspaces [PDF]

open access: yes, 2004
summary:We characterize those Tychonoff quasi-uniform spaces $(X,\mathcal {U})$ for which the Hausdorff-Bourbaki quasi-uniformity is uniformly locally compact on the family $\mathcal {K}_{0}(X)$ of nonempty compact subsets of $X$. We deduce, among other
Künzi, H. P. A.   +7 more
core   +2 more sources

On locally compact semitopological O-bisimple inverse ω-semigroups

open access: yesTopological Algebra and its Applications, 2018
We describe the structure of Hausdorff locally compact semitopological O-bisimple inverse ω- semigroups with compact maximal subgroups. In particular, we show that a Hausdorff locally compact semitopological O-bisimple inverse ω-semigroup with a compact ...
Gutik Oleg
doaj   +1 more source

Two classes of locally compact sober spaces [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We deal with two classes of locally compact sober spaces, namely, the class of locally spec-tral coherent spaces and the class of spaces in which every point has a closed spectral neighborhood (CSN-spaces, for short).
Karim Belaid   +2 more
doaj   +2 more sources

$L^p$-Conjecture on Hypergroups [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, we study $L^p$-conjecture on locally compact hypergroups and by some technical proofs we give some sufficient and necessary conditions  for a weighted Lebesgue space  $L^p(K,w)$ to be a convolution Banach algebra, where ...
Seyyed Mohammad Tabatabaie   +1 more
doaj   +1 more source

Continuity of the dual Haar measure

open access: yesComptes Rendus. Mathématique, 2021
Given a continuous field of locally compact groups, we show that the field of the Plancherel weights of their C*-algebras is lower semi-continuous. As a corollary, we obtain that the dual Haar system of a continuous Haar system of a locally compact ...
Renault, Jean
doaj   +1 more source

Approximating Simple Locally Compact Groups by Their Dense Locally Compact Subgroups [PDF]

open access: yesInternational Mathematics Research Notices, 2019
Abstract The class $\mathscr{S}$ of totally disconnected locally compact (tdlc) groups that are non-discrete, compactly generated, and topologically simple contains many compelling examples. In recent years, a general theory for these groups, which studies the interaction between the compact open subgroups and the global structure, has ...
Caprace, Pierre-Emmanuel   +2 more
openaire   +3 more sources

Compactness and local compactness in hyperspaces

open access: yesTopology and its Applications, 2002
In their interesting paper the authors treat compactness and relative compactness of subsets of hyperspaces, where the hyperspaces are considered to be equipped with the Vietoris, the Wijsman and partly the Hausdorff metric topology. Included in the paper are also characterizations of local compactness with respect to the mentioned hyperspace ...
Costantini, C, LEVI, SANDRO, Pelant, J.
openaire   +1 more source

Globalizing Locally Compact Local Groups

open access: yesJournal of Lie Theory, 2010
5 ...
van den Dries, Lou, Goldbring, Isaac
openaire   +3 more sources

On locally compact shift continuous topologies on the semigroup $\boldsymbol{B}_{[0,\infty)}$ with an adjoined compact ideal

open access: yesМатематичні Студії
Let $[0,\infty)$ be the set of all non-negative real numbers. The set $\boldsymbol{B}_{[0,\infty)}=[0,\infty)\times [0,\infty)$ with the following binary operation $(a,b)(c,d)=(a+c-\min\{b,c\},b+d-\min\{b,c\})$ is a bisimple inverse semigroup.
O. V. Gutik, M. B. Khylynskyi
doaj   +1 more source

APPROXIMATE IDENTITY IN CLOSED CODIMENSION ONE IDEALS OF SEMIGROUP ALGEBRAS [PDF]

open access: yesJournal of Algebraic Systems, 2014
Let S be a locally compact topological foundation semigroup with identity and Ma(S) be its semigroup algebra. In this paper, we give necessary and sufficient conditions to have abounded approximate identity in closed codimension one ideals of the ...
bharam Mohammadzadeh
doaj   +1 more source

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