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We extend the method of layer potentials to manifolds with boundary and cylindrical ends. To obtain this extension along the classical lines, we have to deal with several technical difficulties due to the non-compactness of the boundary,…

Analysis of PDEs · Mathematics 2007-05-23 Marius Mitrea , Victor Nistor

The alpha complex efficiently computes persistent homology of a point cloud $X$ in Euclidean space when the dimension $d$ is low. Given a subset $A$ of $X$, relative persistent homology can be computed as the persistent homology of the…

Algebraic Topology · Mathematics 2019-11-19 Nello Blaser , Morten Brun

We establish a loop space decomposition for certain $CW$-complexes with a single top cell in the presence of a spherical pair, thereby generalizing several known decompositions of Poincar\'{e} duality complexes in which a loop of a product…

Algebraic Topology · Mathematics 2026-01-06 Ruizhi Huang

In this paper, we derive a weighted Reilly type integral formula for differential forms on a compact smooth metric measure space with boundary. As applications, a lower bound of the spectrum for the weighted Hodge Laplacian acting on…

Differential Geometry · Mathematics 2025-12-09 Cao Liyi , Huang Guangyue , Song Hongru

For even dimensional conformal manifolds several new conformally invariant objects were found recently: invariant differential complexes related to, but distinct from, the de Rham complex (these are elliptic in the case of Riemannian…

Differential Geometry · Mathematics 2009-11-13 A. Rod Gover , Josef Silhan

In this paper we fix $1\le p<\infty$ and consider $(\Om,d,\mu)$ be an unbounded, locally compact, non-complete metric measure space equipped with a doubling measure $\mu$ supporting a $p$-Poincar\'e inequality such that $\Om$ is a uniform…

Functional Analysis · Mathematics 2022-12-15 Ryan Gibara , Nageswari Shanmugalingam

We present numerical homotopy continuation algorithms for solving systems of equations on a variety in the presence of a finite Khovanskii basis. These take advantage of Anderson's flat degeneration to a toric variety. When Anderson's…

Algebraic Geometry · Mathematics 2020-09-01 Michael Burr , Frank Sottile , Elise Walker

We show rational homological stability for the homotopy automorphisms and block diffeomorphims of iterated connected sums of products of spheres. The spheres can have different dimension, but need to satisfy a certain connectivity…

Algebraic Topology · Mathematics 2019-12-25 Matthias Grey

In this paper, we present the optimal homotopy analysis method (OHAM) with Green's function technique to acquire accurate numerical solutions for the nonlocal elliptic problems. We first transform the nonlocal boundary value problems into…

Numerical Analysis · Mathematics 2017-12-06 Randhir Singh

We show that the de Rham theorem, interpreted as the isomorphism between distributional de Rham cohomology and simplicial homology in the dual dimension for a simplicial decomposition of a compact oriented manifold, is a straightforward…

Differential Geometry · Mathematics 2011-05-16 Richard B. Melrose

The de Rham-Hodge theory is a landmark of the 20$^\text{th}$ Century's mathematics and has had a great impact on mathematics, physics, computer science, and engineering. This work introduces an evolutionary de Rham-Hodge method to provide a…

Differential Geometry · Mathematics 2020-01-01 Jiahui Chen , Rundong Zhao , Yiying Tong , Guo-Wei Wei

We establish a quantitative relationship between mixed de Rham classes and the geometric complexity of metric connections with totally skew torsion on product manifolds where both factors are compact oriented surfaces. For any…

Differential Geometry · Mathematics 2026-04-21 Alexander Pigazzini , Magdalena Toda

We determine the \emph{$L_\infty$-algebra} that controls deformations of a relative Rota-Baxter Lie algebra and show that it is an extension of the dg Lie algebra controlling deformations of the underlying LieRep pair by the dg Lie algebra…

Quantum Algebra · Mathematics 2021-03-31 Andrey Lazarev , Yunhe Sheng , Rong Tang

We use homotopy operators for the $L_\infty$-algebra associated with an equivariant deformation problem in order to describe a smooth parametrization of the space of structures around a given one. Along the way we give new algebraic and…

Differential Geometry · Mathematics 2025-06-05 Sebastián Daza , João Nuno Mestre

We consider a class of endomorphisms which contains a set of piecewise partially hyperbolic skew-products with a non-uniformly expanding base map. The aimed transformation preserves a foliation which is almost everywhere uniformly…

Dynamical Systems · Mathematics 2025-04-23 Rafael Bilbao , Ricardo Bioni , Rafael Lucena

The Hodge decomposition is a fundamental result in differential geometry and algebraic topology, particularly in the study of differential forms on a Riemannian manifold. Despite extensive research in the past few decades,…

Differential Geometry · Mathematics 2024-08-27 Zhe Su , Yiying Tong , Guo-Wei Wei

We introduce calculus-based formulas for the continuous Euler and homotopy operators. The 1D continuous homotopy operator automates integration by parts on the jet space. Its 3D generalization allows one to invert the total divergence…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Willy Hereman , Michael Colagrosso , Ryan Sayers , Adam Ringler , Bernard Deconinck , Michael Nivala , Mark S. Hickman

Families of conformal field theories are naturally endowed with a Riemannian geometry which is locally encoded by correlation functions of exactly marginal operators. We show that the curvature of such conformal manifolds can be computed…

High Energy Physics - Theory · Physics 2023-08-09 Bruno Balthazar , Clay Cordova

We generalize the classical de Rham decomposition theorem for Riemannian manifolds to the setting of geodesic metric spaces of finite dimension.

Metric Geometry · Mathematics 2007-05-23 Thomas Foertsch , Alexander Lytchak

We consider the notion of the De Rham operator on finite-dimensional diffeological spaces such that the diffeological counterpart \Lambda^1(X) of the cotangent bundle, the so-called pseudo-bundle of values of differential 1-forms, has…

Differential Geometry · Mathematics 2017-03-07 Ekaterina Pervova