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We develop a theory for the representation of opaque solids as volumes. Starting from a stochastic representation of opaque solids as random indicator functions, we prove the conditions under which such solids can be modeled using…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Bailey Miller , Hanyu Chen , Alice Lai , Ioannis Gkioulekas

We develop a general regulated volume expansion for the volume of a manifold with boundary whose measure is suitably singular along a separating hypersurface. The expansion is shown to have a regulator independent anomaly term and a…

Differential Geometry · Mathematics 2018-06-08 A. Rod Gover , Andrew Waldron

The period is a classical complex analytic invariant for a compact Riemann surface defined by integration of differential 1-forms. It has a strong relationship with the complex structure of the surface. In this chapter, we review another…

Geometric Topology · Mathematics 2016-02-09 Yuuki Tadokoro

Let W be a compact manifold and let \rho be a representation of its fundamental group into PSL(2,C). The volume of \rho is defined by taking any \rho-equivariant map from the universal cover of W to H^3 and then by integrating the pull-back…

Geometric Topology · Mathematics 2007-05-23 Stefano Francaviglia

The finite volume Laplacian can be defined in all dimensions and is a natural way to approximate the operator on a simplicial mesh. In the most general setting, its definition with orthogonal duals may require that not all volumes are…

Differential Geometry · Mathematics 2021-08-18 Thomas Doehrman , David Glickenstein

Let Delta be an integral convex polytope containing the origin of dimension n in the n-dim real space and it is simplicial at all origin-less facets. Let A(Delta) be the space of all Laurent polynomials f parametered by its coefficients…

Number Theory · Mathematics 2012-11-28 Hui June Zhu

This paper introduces Least Volume (LV)--a simple yet effective regularization method inspired by geometric intuition--that reduces the number of latent dimensions required by an autoencoder without prior knowledge of the dataset's…

Machine Learning · Computer Science 2025-09-26 Qiuyi Chen , Cashen Diniz , Mark Fuge

We consider operators arising from regular Dirichlet forms with vanishing killing term. We give bounds for the bottom of the (essential) spectrum in terms of exponential volume growth with respect to an intrinsic metric. As special cases we…

Functional Analysis · Mathematics 2014-02-26 Sebastian Haeseler , Matthias Keller , Radosław K. Wojciechowski

The volume function V(t) of a compact set S\in R^d is just the Lebesgue measure of the set of points within a distance to S not larger than t. According to some classical results in geometric measure theory, the volume function turns out to…

Statistics Theory · Mathematics 2024-02-02 Alejandro Cholaquidis , Antonio Cuevas , Leonardo Moreno

We extend finding geometrically-significant preserved quantities by solving specific PDEs to the affine transformations and subgroups. This can be viewed not only as a purely geometrical problem but also as a subcase of finding physical…

General Relativity and Quantum Cosmology · Physics 2018-09-25 Edward Anderson

We consider the computation of volumes contained in a spatial slice of AdS$_3$ in terms of observables in a dual CFT. Our main tool is kinematic space, defined either from the bulk perspective as the space of oriented bulk geodesics, or…

High Energy Physics - Theory · Physics 2019-01-30 Raimond Abt , Johanna Erdmenger , Marius Gerbershagen , Charles M. Melby-Thompson , Christian Northe

We present a variety of geometrical and combinatorial tools that are used in the study of geometric structures on surfaces: volume, contact, symplectic, complex and almost complex structures. We start with a series of local rigidity results…

Complex Variables · Mathematics 2024-02-28 Norbert A'Campo , Athanase Papadopoulos

We prove that if $n$ is even, $(M,g)$ is a compact $n$-dimensional Riemannian manifold whose Pfaffian form is a positive multiple of the volume form, and $y\in C^{1,\alpha}(M;\mathbb{R}^{n+1})$ is an isometric immersion with $n/(n+1)<…

Differential Geometry · Mathematics 2016-09-15 Sören Behr , Heiner Olbermann

The main goal of this paper is to present a series of inequalities connecting the surface area measure of a convex body and surface area measure of its projections and sections. We present a solution of a question from S. Campi, P.…

Metric Geometry · Mathematics 2017-08-29 Alexander Koldobsky , Christos Saroglou , Artem Zvavitch

Zonoids are Hausdorff limits of zonotopes, while zonotopes are convex polytopes defined as the Minkowski sums of finitely many segments. We present a combinatorial framework that links the study of mixed volumes of zonoids (a topic that has…

Combinatorics · Mathematics 2024-11-04 Gennadiy Averkov , Katherina von Dichter , Simon Richard , Ivan Soprunov

Determining the number of embeddings of Laman graph frameworks is an open problem which corresponds to understanding the solutions of the resulting systems of equations. In this paper we investigate the bounds which can be obtained from the…

Combinatorics · Mathematics 2009-03-13 Reinhard Steffens , Thorsten Theobald

We examine the lattice generated by two pairs of supplementary vector subspaces of a finite-dimensional vector space by intersection and sum, with the aim of applying the results to the study of representations admitting two pairs of…

Representation Theory · Mathematics 2008-02-21 Lionel Bérard Bergery , Thomas Krantz

The Brunn-Minkowski theory relies heavily on the notion of mixed volumes. Despite its particular importance, even explicit representations for the mixed volumes of two convex bodies in Euclidean space are available only in special cases.…

Metric Geometry · Mathematics 2014-01-09 Daniel Hug , Jan Rataj , Wolfgang Weil

Let $M$ be a compact, connected Riemannian manifold whose Riemannian volume measure is denoted by $\sigma$. Let $f: M \rightarrow \mathbb{R}$ be a non-constant eigenfunction of the Laplacian. The random wave conjecture suggests that in…

Spectral Theory · Mathematics 2019-06-17 Bo'az Klartag

We show that the standard Lorentz transformations admit an invariant mass (length) scale, such as the Planck scale. In other words, the frame independence of such scale is built-in within those transformations, and one does not need to…

General Relativity and Quantum Cosmology · Physics 2019-04-17 Pasquale Bosso , Saurya Das