Results 41 to 50 of about 6,651,322 (372)

NONEXISTENCE OF IRREVERSIBLE PROCESSES IN COMPACT SPACE–TIME [PDF]

, 2006
It is shown that if physical space–time were truly compact there would only be of the order-of-one solutions to the classical field equations with a weighting to be explained.
H. Nielsen, M. Ninomiya
semanticscholar   +1 more source

On the Čech-Completeness of the Space of τ-Smooth Idempotent Probability Measures

Axioms
For the set I(X) of probability measures on a compact Hausdorff space X, we propose a new way to introduce the topology by using the open subsets of the space X.
Ljubiša D. R. Kočinac, Adilbek A. Zaitov, Muzaffar R. Eshimbetov   +2 more
doaj   +1 more source

Adherent Compact Spaces [PDF]

Proceedings of the American Mathematical Society, 1989
A new class of H H -closed spaces, herein referred to as the class of adherent compact spaces, is introduced—and shown to be properly contained in the class of C C -compact spaces. It is also shown, using a construction of Goss and Viglino, that these spaces need not be seminormal.
openaire   +1 more source

Projectively-compact spinor vertices and space-time spin-locality in higher-spin theory

Physics Letters B, 2022
The concepts of compact and projectively-compact spin-local spinor vertices are introduced. Vertices of this type are shown to be space-time spin-local, i.e., their restriction to any finite subset of fields is space-time local.
M.A. Vasiliev
doaj   +1 more source

$G_\delta$-topology and compact cardinals

, 2018
For a topological space $X$, let $X_\delta$ be the space $X$ with $G_\delta$-topology of $X$. For an uncountable cardinal $\kappa$, we prove that the following are equivalent: (1) $\kappa$ is $\omega_1$-strongly compact.
Usuba, Toshimichi
core   +1 more source

Compact and extremally disconnected spaces

International Journal of Mathematics and Mathematical Sciences, 2004
Viglino defined a Hausdorff topological space to be C-compact if each closed subset of the space is an H-set in the sense of Veličko. In this paper, we study the class of Hausdorff spaces characterized by the property that each closed subset is an S-set ...
Bhamini M. P. Nayar
doaj   +1 more source

(In)homogeneous invariant compact convex sets of probability measures

Pracì Mìžnarodnogo Geometričnogo Centru, 2020
It is proved that for any iterated function system of contractions on a complete metric space there exists an invariant compact convex sets of probability measures of compact support on this space.
Natalia Mazurenko, Mykhailo Zarichnyi
doaj   +1 more source

Tachyons in compact spaces [PDF]

Journal of High Energy Physics, 2005
We discuss condensations of closed string tachyons localized in compact spaces. Time evolution of an on-shell condensation is naturally related to the worldsheet RG flow. Some explicit tachyonic compactifications of Type II string theory is considered, and some of them are shown to decay into supersymmetric theories known as the little string theories.
openaire   +2 more sources

On Some Results in Fuzzy Length Space

Al-Mustansiriyah Journal of Science, 2020
In this paper, depending on the notion of fuzzy length space we define the Cartesian product of two fuzzy length spaces. we proved that the Cartesian product of two fuzzy length spaces is a fuzzy length space.
Raghad I. Sabri, Mayada Nazar, Mohammed Ali   +2 more
doaj   +1 more source

On generalization of homotopy axiom

Pracì Mìžnarodnogo Geometričnogo Centru, 2023
In [S. Kermit, Proc. Amer. Math. Soc., 1972, 31(1):271-275] it was proven that if G is compact topological group or field then in the homotopy axiom for Alexander-Spanier-Kolmogoroff cohomology the parameter segment [0;1] can be replaced by any compact ...
Umed Karimov
doaj   +1 more source