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We investigate asymptotically flat manifolds with cone structure at infinity. We show that any such manifold M has a finite number of ends. For simply connected ends we classify all possible cones at infinity, except for the 4-dimensional…

Differential Geometry · Mathematics 2016-07-22 Anton Petrunin , Wilderich Tuschmann

We show that the Hilbert functor of points on an arbitrary separated algebraic stack is an algebraic space. We also show the algebraicity of the Hilbert stack of points on an algebraic stack and the algebraicity of the Weil restriction of…

Algebraic Geometry · Mathematics 2014-09-19 David Rydh

This paper is a follow-up to the author's work "Topology of probability measure space, I" devoted to investigation of the functors $\hat P$ and $P_\tau$ of spaces of probability $\tau$-smooth and Radon measures. In this part, we study the…

General Topology · Mathematics 2012-06-11 Taras Banakh

Let $Y$ be a closed $3$-manifold such that all flat $SU(2)$-connections on $Y$ are $non$-$degenerate$. In this article, we prove a Uhlenbeck-type compactness theorem on $Y$ for stable flat $SL(2,\mathbb{C})$ connections satisfying an…

Differential Geometry · Mathematics 2021-10-19 Teng Huang

In this paper, we present several definitive characterizations of the $C^1$ smoothness of definable sets in terms of their tangent cones and some other metric properties. In particular, we recover some of the beautiful characterizations…

Metric Geometry · Mathematics 2026-01-27 André Gadelha Rocha , José Edson Sampaio

We prove the solvability in Sobolev spaces for both divergence and non-divergence form higher order parabolic and elliptic systems in the whole space, on a half space, and on a bounded domain. The leading coefficients are assumed to be…

Analysis of PDEs · Mathematics 2015-05-18 Hongjie Dong , Doyoon Kim

We obtain restrictions on the topology of a closed connected manifold B that bounds a (possibly noncompact) manifold whose interior V admits a complete Riemannian metric of nonpositive sectional curvature. If G denotes the fundamental group…

Differential Geometry · Mathematics 2014-08-05 Igor Belegradek , T. Tam Nguyen Phan

We give a short and elementary proof of the boundedness of triangular Hilbert transform along non-flat curves definable in a polynomially bounded o-minimal structure. We also provide a criterion on the multiplier to determine whether the…

Classical Analysis and ODEs · Mathematics 2024-10-22 Martin Hsu , Fred Yu-Hsiang Lin

We provide new conditions under which the alternating projection sequence converges in norm for the convex feasibility problem where a linear subspace with finite codimension $N\geq 2$ and a lattice cone in a Hilbert space are considered.…

Optimization and Control · Mathematics 2024-12-16 Francesco Battistoni , Enrico Miglierina

We prove a log-Sobolev inequality for a certain class of log-concave measures in high dimension. These are the probability measures supported on the unit cube in R^n whose density takes the form exp(-H) where the function H is assumed to be…

Metric Geometry · Mathematics 2012-12-18 Bo'az Klartag

We call a metric space $s$-negligible iff its $s$-dimensional Hausdorff measure vanishes. We show that every countably $m$-rectifiable subset of $\mathbb{R}^{2n}$ can be displaced from every $(2n-m)$-negligible subset by a Hamiltonian…

Symplectic Geometry · Mathematics 2024-09-09 Yann Guggisberg , Fabian Ziltener

We show that it is consistent relative to a weakly compact cardinal that strong homology is additive and compactly supported within the class of locally compact separable metric spaces. This complements work of Marde\v{s}i\'{c} and Prasolov…

Logic · Mathematics 2022-02-22 Nathaniel Bannister , Jeffrey Bergfalk , Justin Tatch Moore

Given a closed semi-algebraic set $X \subset \mathbb{R}^n$ and a continuous semi-algebraic mapping $G \colon X \to \mathbb{R}^m,$ it will be shown that there exists an open dense semi-algebraic subset $\mathscr{U}$ of $L(\mathbb{R}^n,…

Algebraic Geometry · Mathematics 2021-04-05 Si Tiep Dinh , Zbigniew Jelonek , Tien Son Pham

We show that deformations of a surjective morphism onto a Fano manifold of Picard number 1 are unobstructed and rigid modulo the automorphisms of the target, if the variety of minimal rational tangents of the Fano manifold is non-linear or…

Algebraic Geometry · Mathematics 2009-08-17 Jun-Muk Hwang

Semi-cosimplicial objects in the category of Hilbert spaces with isometries which are motivated by non-commutative probability theory, in particular by the distributional symmetry of spreadability, are introduced and systematically…

Operator Algebras · Mathematics 2026-03-31 D. Gwion Evans , Rolf Gohm , Claus Köstler

In this article we prove the irreducibility of the Hilbert scheme of rationnal curves on homogeneous varieties with fixed class in the Chow ring. This result has also been proved by J. F. Thomsen [T] and B. Kim and R. Pandharipande [KP].…

Algebraic Geometry · Mathematics 2007-05-23 Nicolas Perrin

We construct moduli spaces of semistable objects on an Enriques surface for generic Bridgeland stability condition and prove their projectivity. We further generalize classical results about moduli spaces of semistable sheaves on an…

Algebraic Geometry · Mathematics 2017-05-17 Howard Nuer

We present a barycentric decomposition for quantum instruments whose output space is finite-dimensional and input space is separable. As a special case, we obtain a barycentric decomposition for channels between such spaces and for…

Quantum Physics · Physics 2026-03-03 Juha-Pekka Pellonpää , Erkka Haapasalo , Roope Uola

We consider a smooth Euclidean solid cone endowed with a smooth homogeneous density function used to weight Euclidean volume and hypersurface area. By assuming convexity of the cone and a curvature-dimension condition we prove that the…

Differential Geometry · Mathematics 2013-04-17 Antonio Cañete , César Rosales

We show that the set of singular holomorphic foliations of the projective spaces with split tangent sheaf and with good singular set is open in the space of holomorphic foliations. As applications we present a generalization of a result by…

Complex Variables · Mathematics 2010-04-05 Fernando Cukierman , Jorge Vitorio Pereira