منابع مشابه
ω-NARROWNESS AND RESOLVABILITY OF TOPOLOGICAL GENERALIZED GROUPS
Abstract. A topological group H is called ω -narrow if for every neighbourhood V of it’s identity element there exists a countable set A such that V A = H = AV. A semigroup G is called a generalized group if for any x ∈ G there exists a unique element e(x) ∈ G such that xe(x) = e(x)x = x and for every x ∈ G there exists x − 1 ∈ G such that x − 1x = xx − 1 = e(x). Also le...
متن کاملSome Topological Properties of Ω-covering Sets
We prove the following theorems: 1. There exists an ω-covering with the property s0. 2. Under cov(N ) = 2 there exists X such that ∀B∈Bor[B ∩ X is not an ω-covering or X \B is not an ω-covering]. 3. Also we characterize the property of being an ω-covering.
متن کاملTopological Complexity of ω-Powers : Extended Abstract
1 Equipe Modèles de Calcul et Complexité Laboratoire de l’Informatique du Parallélisme CNRS et Ecole Normale Supérieure de Lyon 46, Allée d’Italie 69364 Lyon Cedex 07, France. [email protected] 2 Equipe d’Analyse Fonctionnelle Université Paris 6 4, place Jussieu, 75 252 Paris Cedex 05, France [email protected] and Université de Picardie, I.U.T. de l’Oise, site de Creil, 13, all...
متن کاملTopological Partition Relations of the Form ω ∗ → ( Y ) 12
Theorem. The topological partition relation ω → (Y )2 (a) fails for every space Y with |Y | ≥ 2c; (b) holds for Y discrete if and only if |Y | ≤ c; (c) holds for certain non-discrete P -spaces Y ; (d) fails for Y = ω ∪ {p} with p ∈ ω; (e) fails for Y infinite and countably compact. AMS Classification Numbers: Primary 54A25, 54D40, 05A17; Secondary 54A10, 54D30, 04A20
متن کاملDeformation of BF theories, Topological Open Membrane and A Generalization of The Star Deformation
We consider a deformation of the BF theory in any dimension by means of the antifield BRST formalism. Possible consistent interaction terms for the action and the gauge symmetries are analyzed and we find a new class of topological gauge theories. Deformations of the world volume BF theory are considered as possible deformations of the topological open membrane. Therefore if we consider these t...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2019
ISSN: 1029-8479
DOI: 10.1007/jhep10(2019)115