Results 1 to 10 of about 60,802 (187)

Topological Observables in Semiclassical Field Theories [PDF]

open access: yes, 1992
We give a geometrical set up for the semiclassical approximation to euclidean field theories having families of minima (instantons) parametrized by suitable moduli spaces ${\cal M}$.
't Hooft   +17 more
core   +3 more sources

Topological convolution algebras [PDF]

open access: yes, 2013
In this paper we introduce a new family of topological convolution algebras of the form $\bigcup_{p\in\mathbb N} L_2(S,\mu_p)$, where $S$ is a Borel semi-group in a locally compact group $G$, which carries an inequality of the type $\|f*g\|_p\le A_{p,q}\|
Alpay, Daniel, Salomon, Guy
core   +3 more sources

On the Random Conjugate Spaces of a Random Locally Convex Module [PDF]

open access: yes, 1998
Theoretically speaking, there are four kinds of possibilities to define the random conjugate space of a random locally convex module. The purpose of this paper is to prove that among the four kinds there are only two which are universally suitable for ...
Tiexin, Guo, Shien, Zhao
core   +4 more sources

Disintegration of positive isometric group representations on $\mathrm{L}^p$-spaces [PDF]

open access: yes, 2017
Let $G$ be a Polish locally compact group acting on a Polish space $X$ with a $G$-invariant probability measure $\mu$. We factorize the integral with respect to $\mu$ in terms of the integrals with respect to the ergodic measures on $X$, and show that ...
de Jeu, Marcel, Rozendaal, Jan
core   +3 more sources

The Liouville property and random walks on topological groups

open access: yes, 2020
We study harmonic functions and Poisson boundaries for Borel probability measures on general (i.e., not necessarily locally compact) topological groups, and we prove that a second-countable topological group is amenable if and only if it admits a fully ...
Schneider, Friedrich Martin   +1 more
core   +1 more source

Recent progress in random metric theory and its applications to conditional risk measures

open access: yes, 2011
The purpose of this paper is to give a selective survey on recent progress in random metric theory and its applications to conditional risk measures. This paper includes eight sections. Section 1 is a longer introduction, which gives a brief introduction
A. Ruszczyński   +59 more
core   +1 more source

Two-dimensional quantum Yang-Mills theory with corners [PDF]

open access: yes, 2006
The solution of quantum Yang-Mills theory on arbitrary compact two-manifolds is well known. We bring this solution into a TQFT-like form and extend it to include corners.
Lauda A Pfeiffer H   +11 more
core   +2 more sources

Continuous selections of multivalued mappings

open access: yes, 2014
This survey covers in our opinion the most important results in the theory of continuous selections of multivalued mappings (approximately) from 2002 through 2012.
A. Askoy   +100 more
core   +1 more source

Amenability, extreme amenability, model-theoretic stability, and dependence property in integral logic

open access: yes, 2016
This paper has three parts. First, we study and characterize amenable and extremely amenable topological semigroups in terms of invariant measures using integral logic.
Khanaki, Karim
core   +1 more source

Projective Techniques and Functional Integration [PDF]

open access: yes, 1994
A general framework for integration over certain infinite dimensional spaces is first developed using projective limits of a projective family of compact Hausdorff spaces.
Ashtekar, Abhay, Lewandowski, Jerzy
core   +4 more sources

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