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We prove that the categories of smooth and analytic unitary representations of Banach--Lie supergroups are well-behaved under restriction functors, in the sense that the restriction of a representation to an integral subsupergroup is…

Representation Theory · Mathematics 2011-07-07 Stephane Merigon , Karl-Hermann Neeb , Hadi Salmasian

Motivated by the study of the interrelation between functorial and algebraic quantum field theory, we point out that on any locally trivial bundle of compact groups, representations up to homotopy are enough to separate points by means of…

Differential Geometry · Mathematics 2015-12-03 Giorgio Trentinaglia , Chenchang Zhu

We give a complete classification (up to smooth homotopy) of finitely summable Fredholm representations (Fredholm modules) over higher rank groups and lattices. Our results are a direct consequence of work of Bader, Furman, Gelander and…

Operator Algebras · Mathematics 2008-06-18 Michael Puschnigg

In this survey, we report on the state of the art of some of the fundamental problems in the Lie theory of Lie groups modeled on locally convex spaces, such as integrability of Lie algebras, integrability of Lie subalgebras to Lie…

Representation Theory · Mathematics 2015-01-27 Karl-Hermann Neeb

The unitary representation theory of locally compact contraction groups and their semi-direct products with $\mathbb{Z}$ is studied. We put forward the problem of completely characterising such groups which are type I or CCR and this…

Group Theory · Mathematics 2025-03-28 Max Carter

This work addresses an extension of Fourier-Stieltjes transform of a vector measure defined on compact groups to locally compact groups, by using a group representation induced by a representation of one of its compact subgroups.

Functional Analysis · Mathematics 2022-08-16 Y. I. Akakpo , M. N. Hounkonnou , K. Enakoutsa , V. S. K. Assiamoua

This is a preliminary version of a book on infinite-dimensional Lie groups. It covers the basics of calculus and manifolds in the context of locally convex spaces, based on Bastiani's notion of a smooth map. Starting from this concept, we…

Functional Analysis · Mathematics 2026-02-16 Helge Gloeckner , Karl-Hermann Neeb

We develop a class of homeomorphisms on a compact homogeneous space of a transitive group action and show how the class sheds new light on a decomposition problem. We further use this class to show that every such homogeneous space in a…

Functional Analysis · Mathematics 2023-08-22 Samuel A. Hokamp

We extend the theory of diffeomorphism-invariant spin network states from the real-analytic category to the smooth category. Suppose that G is a compact connected semisimple Lie group and P -> M is a smooth principal G-bundle. A `cylinder…

q-alg · Mathematics 2008-02-03 John C. Baez , Stephen Sawin

Given a metrizable topological vector space, we can also use its von Neumann bornology or its bornology of precompact subsets to do analysis. We show that the bornological and topological approaches are equivalent for many problems. For…

Functional Analysis · Mathematics 2015-10-23 Ralf Meyer

This paper clarifies the local structure of the energy representation of a local gauge group. The group to be considered is a smooth map from a manifold into a compact Lie group. It acts on a Boson Fock spaces generated by connection…

Mathematical Physics · Physics 2009-04-16 Hiroshi Ando

We introduce some classical concepts in the representation theory of compact groups, in order to use them for a new generalization of the Peter-Weyl Theorem. We mostly deal with functions on locally compact groups possessing large…

Representation Theory · Mathematics 2026-03-10 Y. Bavuma , E. Stevenson , F. G. Russo

A general problem in complex cobordism theory is to find useful representatives for cobordism classes. One particularly convenient class of complex manifolds consists of smooth projective toric varieties. The bijective correspondence…

Algebraic Topology · Mathematics 2013-12-17 Andrew Wilfong

We study the representability of motivic spheres by smooth varieties. We show that certain explicit "split" quadric hypersurfaces have the $\mathbb A^1$-homotopy type of motivic spheres over the integers and that the $\mathbb A^1$-homotopy…

K-Theory and Homology · Mathematics 2015-11-30 Aravind Asok , Brent Doran , Jean Fasel

Smooth modules for affine Kac-Moody algebras have a prime importance for the quantum field theory as they correspond to the representations of the universal affine vertex algebras. But, very little is known about such modules beyond the…

Representation Theory · Mathematics 2025-11-03 Vyacheslav Futorny , Xiangqian Guo , Yaohui Xue , Kaiming Zhao

We study the representation theory of the increasing monoid. Our results provide a fairly comprehensive picture of the representation category: for example, we describe the Grothendieck group (including the effective cone), classify…

Representation Theory · Mathematics 2018-12-27 Sema Güntürkün , Andrew Snowden

We give a new and self-contained proof of the existence and unicity of the flow for an arbitrary (not necessarily homogeneous) smooth vector field on a real supermanifold, and extend these results to the case of holomorphic vector fields on…

Differential Geometry · Mathematics 2013-06-13 Stéphane Garnier , Tilmann Wurzbacher

A non-unital algebra in a closed monoidal category is called self-induced if the multiplication induces an isomorphism between A\otimes_A A and A. For such an algebra, we define smoothening and roughening functors that retract the category…

Rings and Algebras · Mathematics 2015-10-23 Ralf Meyer

We show that one can lift locally real analytic curves from the orbit space of a compact Lie group representation, and that one can lift smooth curves even globally, but under an assumption.

Differential Geometry · Mathematics 2007-05-23 Dmitri Alekseevsky , Andreas Kriegl , Mark Losik , Peter W. Michor

Diffeological and differential spaces are generalisations of smooth structures on manifolds. We show that the "intersection" of these two categories is isomorphic to Fr\"olicher spaces, another generalisation of smooth structures. We then…

Differential Geometry · Mathematics 2013-09-17 Jordan Watts