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In this paper we show that Musielak--Orlicz spaces are UMD spaces under the so-called $\Delta_2$ condition on the generalized Young function and its complemented function. We also prove that if the measure space is divisible, then a…

Functional Analysis · Mathematics 2018-11-12 Nick Lindemulder , Mark Veraar , Ivan Yaroslavtsev

The goal of this paper is to describe the birational geometry of the blowup of $\mathbb{P}^n$ at $n+4$ points in very general position. To achieve this, we follow an idea of Mukai and explore a special instance of Gale duality, namely, a…

Algebraic Geometry · Mathematics 2026-05-27 Carolina Araujo , Ana-Maria Castravet , Inder Kaur , Diletta Martinelli

We generalize Luna's fundamental lemma to smooth morphisms between stacks with good moduli spaces. We also give a precise condition for when it holds for non-smooth morphisms and versions for coherent sheaves and complexes. This generalizes…

Algebraic Geometry · Mathematics 2020-08-26 David Rydh

Bornological universes were introduced some time ago by Hu and obtained renewed interest in recent articles on convergence in hyperspaces and function spaces and optimization theory. One of Hu's results gives us a necessary and sufficient…

General Topology · Mathematics 2009-09-29 Tom Vroegrijk

A fundamental notion in group theory, which originates in an article of Ulam and von Neumann from $1947$ is uniform simplicity. A group $G$ is said to be $n$-uniformly simple for $n \in \mathbf{N}$ if for every $f,g\in G\setminus \{id\}$,…

Group Theory · Mathematics 2026-01-23 James Hyde , Yash Lodha

Generalized topological spaces in the sense of Cs\'{a}sz\'{a}r have two main features which distinguish them from typical topologies. First, these families of subsets are not closed under intersections. Second, we allow for the possibility…

Logic · Mathematics 2019-09-23 Tomasz Witczak

Let $G$ be a locally compact group and also let $H$ be a compact subgroup of $G$. It is shown that, if $\mu$ is a relatively invariant measure on $G/H$ then there is a well-defined convolution on $L^1(G/H,\mu)$ such that the Banach space…

Functional Analysis · Mathematics 2012-01-10 Arash Ghaani Farashahi

We introduce the concept of a new kind of symmetric homeomorphisms on the unit circle, which is derived from the generalization of symmetric homeomorphisms on the real line. By the investigation of the barycentric extension for this class…

Complex Variables · Mathematics 2019-08-20 Huaying Wei , Katsuhiko Matsuzaki

We unify and generalize the notions of vacuum and amplitude in linear quantum field theory in curved spacetime. Crucially, the generalized notion admits a localization in spacetime regions and on hypersurfaces. The underlying concept is…

High Energy Physics - Theory · Physics 2019-11-13 Daniele Colosi , Robert Oeckl

In this paper, uniform versions of index for uniform spaces equipped with free involutions are introduced. They are mainly based on B-index defined and studied by C.-T. Yang in 1955, index studied by Conner and Floyd in 1960 and further…

Algebraic Topology · Mathematics 2013-12-02 Jaspreet Kaur

Umbral moonshine describes an unexpected relation between 23 finite groups arising from lattice symmetries and special mock modular forms. It includes the Mathieu moonshine as a special case and can itself be viewed as an example of the…

Representation Theory · Mathematics 2019-03-05 Miranda C. N. Cheng , Paul de Lange , Daniel P. Z. Whalen

The $\lambda$-property and the uniform $\lambda$-property were first introduced by R. Aron and R. Lohman in 1987 as geometric properties of Banach spaces. In 1989, Th. Shura and D. Trautman showed that the Schreier space possesses the…

Functional Analysis · Mathematics 2019-04-24 Kevin Beanland , Hung Viet Chu

To each 2-dimensional irreducible p-adic representation of Gal(Qpbar/Qp) which becomes crystalline over an abelian extension of Q_p, we associate a Banach space B(V) endowed with a linear continuous unitary action of GL_2(Q_p). When V is…

Number Theory · Mathematics 2010-02-22 L. Berger , C. Breuil

We show that there exists a separable reflexive Banach space into which every separable uniformly convex Banach space isomorphically embeds. This solves a problem of J. Bourgain. We also give intrinsic characterizations of separable…

Functional Analysis · Mathematics 2007-06-13 E. Odell , Th. Schlumprecht

The Generalized Cornu Spiral (GCS) was first proposed by Ali et al. in 1995 [9]. Due to the monotonocity of its curvature function, the surface generated with GCS segments has been considered as a high quality surface and it has potential…

Graphics · Computer Science 2013-05-01 R. U. Gobithaasan , J. M. Ali , Kenjiro T. Miura

Mazur's separable quotient problem, open since 1932, asks whether every infinite-dimensional Banach space admits an infinite-dimensional separable quotient. We prove that any $\mathscr{L}_\infty$-space $Y$ containing a subspace $X$ such…

Functional Analysis · Mathematics 2026-04-15 Kartik Patri

We investigate the effective dynamics of a spatially flat FLRW universe coupled to a massless scalar field by applying the improved generalized uncertainty principle (GUP)-inspired deformations to the algebra of Ashtekar-Barbero variables.…

General Relativity and Quantum Cosmology · Physics 2026-04-09 Saeed Rastgoo , Wilfredo Yupanqui

We prove a conjecture of Tom Ilmanen's and Hubert Bray's regarding the existence of the outermost generalized apparent horizon in an initial data set and that it is outer area minimizing.

Differential Geometry · Mathematics 2015-05-13 Michael Eichmair

Based on the entropy-area relation from Nouicer's generalised uncertainty principle (GUP), we derive the GUP modified Friedmann equations from the first law of thermodynamics at apparent horizon. We find a minimum apparent horizon due to…

General Relativity and Quantum Cosmology · Physics 2024-04-30 Özgür Ökcü

Though manifold-based clustering has become a popular research topic, we observe that one important factor has been omitted by these works, namely that the defined clustering loss may corrupt the local and global structure of the latent…

Machine Learning · Computer Science 2021-10-12 Lirong Wu , Zicheng Liu , Zelin Zang , Jun Xia , Siyuan Li , Stan. Z Li