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Modeling spatial processes that exhibit both smooth and rough features poses a significant challenge. This is especially true in fields where complex physical variables are observed across spatial domains. Traditional spatial techniques,…

Methodology · Statistics 2024-10-30 Matthew Hofkes , Douglas Nychka

Concerns are expressed for the Monotonic Imbalance Bounding (MIB) property (Iacus et al. 2011) and for MIB matching because i) the definition of the MIB property leads to inconsistencies and the nature of the imbalance measure is not…

Statistics Theory · Mathematics 2013-01-08 Yannis G. Yatracos

This article extends the literature on copulas with discrete or continuous marginals to the case where some of the marginals are a mixture of discrete and continuous components. We do so by carefully defining the likelihood as the density…

Methodology · Statistics 2017-09-05 David Gunawan , Mohamad A. Khaled , Robert Kohn

In this article, we focus on the invariance property of Morse homology on noncompact manifolds. We expect to apply outcomes of this article to several types of Floer homology, thus we define Morse homology purely axiomatically and…

Symplectic Geometry · Mathematics 2010-12-30 Jungsoo Kang

We derive two finiteness properties as consequences of the geometrical non-degeneracy of an algebraic subvariety $W$ of a power of the multiplicative group, concerning the intersections of $W$ with translates of a subtorus $H$ of dimension…

Number Theory · Mathematics 2025-06-23 Gabriel Andreas Dill , Francesco Gallinaro

We present certain new properties about the intersection numbers on moduli spaces of curves $\bar{\sM}_{g,n}$, including a simple explicit formula of $n$-point functions and several new identities of intersection numbers. In particular we…

Algebraic Geometry · Mathematics 2011-03-24 Kefeng Liu , Hao Xu

Using the work of Cornulier-Valette and Whyte, we show that neither the Haagerup property nor weak amenability is invariant under quasi-isometry of finitely generated groups.

Group Theory · Mathematics 2026-02-25 Mathieu Carette , Kevin Whyte , Sylvain Arnt , Thibault Pillon , Alain Valette

Given a Lie algebroid we discuss the existence of a smooth abelian integration of its abelianization. We show that the obstructions are related to the extended monodromy groups introduced recently in \cite{CFMb}. We also show that this…

Differential Geometry · Mathematics 2019-05-31 Ivan Contreras , Rui Loja Fernandes

In this paper we show that the fibred coarse embeddability of a warped cone implies the Haagerup property of the appropriate group. Moreover, Kazhdan's property (T) of the group implies geometric property (T) of the warped cone.

Functional Analysis · Mathematics 2017-03-24 Guoqiang Li , Xianjin Wang

Following recent work by E. Fuchs et al., we study the Brauer-Manin obstruction for integral points on Wehler K3 surfaces of Markoff type. In particular, we construct some families which fail the integral Hasse principle via the…

Number Theory · Mathematics 2025-04-16 Quang-Duc Dao

On a smoothly stratified space, we identify intersection cohomology of any given perversity with an associated weighted $L^2$ cohomology for iterated fibred cusp metrics on the smooth stratum. In particular given a Witt space, we identify…

Differential Geometry · Mathematics 2015-02-18 Eugénie Hunsicker , Frédéric Rochon

In this paper one proves a special case of a conjecture by Nicolas Bergeron. This conjecture is a kind of automorphic Lefschetz property. It relates the primitive cohomology of a locally symmetric manifolds modeled on $U(p,q+r)$ to the…

Number Theory · Mathematics 2009-10-02 Mathieu Cossutta

We define an invariant of contact 3-manifolds with convex boundary using Kronheimer and Mrowka's sutured monopole Floer homology theory (SHM). Our invariant can be viewed as a generalization of Kronheimer and Mrowka's contact invariant for…

Symplectic Geometry · Mathematics 2016-06-16 John A. Baldwin , Steven Sivek

We obtain some results on symmetries of sub-Riemannian surfaces. In case of contact sub-Riemannian surface we base on invariants found by Hughen \cite{Hughen}. Using these invariants, we find conditions under which a sub-Riemannian surface…

Differential Geometry · Mathematics 2009-08-27 Mikhail Armenovich Malakhaltsev , José Ricardo Arteaga

Recently M. Mustata and V. Srinivas related a natural conjecture about the Frobenius action on the cohomology of the structure sheaf after reduction to characteristic $p > 0$ with another conjecture connecting multiplier ideals and test…

Algebraic Geometry · Mathematics 2016-03-18 Bhargav Bhatt , Karl Schwede , Shunsuke Takagi

For having a Poincar\'e duality via a cap product between the intersection homology of a paracompact oriented pseudomanifold and the cohomology given by the dual complex, G. Friedman and J. E. McClure need a coefficient field or an…

Algebraic Topology · Mathematics 2018-02-01 David Chataur , Martintxo Saralegi-Aranguren , Daniel Tanré

Torsion sensitive intersection homology was introduced to unify several versions of Poincare duality for stratified spaces into a single theorem. This unified duality theorem holds with ground coefficients in an arbitrary PID and with no…

Geometric Topology · Mathematics 2023-09-27 Greg Friedman

The appropriate boundary condition between an unconfined incompressible viscous fluid and a porous medium is given by the law of Beavers and Joseph. The latter has been justified both experimentally and mathematically, using the method of…

Mathematical Physics · Physics 2015-04-23 Sören Dobberschütz

This paper regroups some of the basic properties of Lipschitz maps and their flows. Many of the results presented here are classical in the case of smooth maps. We prove them here in the Lipschitz case for a better understanding of the…

Classical Analysis and ODEs · Mathematics 2019-01-23 Youness Boutaib

We prove that the synthetic Ricci curvature lower bound known as the measure contraction property (MCP) can fail in sub-Riemannian geometry. This may happen beyond step two, if the distance function is not Lipschitz in charts, and it…

Differential Geometry · Mathematics 2025-06-12 Samuël Borza , Luca Rizzi