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We prove an upper bound on the Shannon capacity of a graph via a linear programming variation. We show that our bound can outperform both the Lov\'asz theta number and the Haemers minimum rank bound. As a by-product, we also obtain a new…

Information Theory · Computer Science 2018-09-07 Sihuang Hu , Itzhak Tamo , Ofer Shayevitz

We prove a lower bound on the number of the convex components of a compact set with non-empty interior in $\mathbb{R}^n$ for all $n\ge2$. Our result generalizes and improves the inequalities previously obtained in M. Carozza, F. Giannetti,…

Metric Geometry · Mathematics 2023-09-07 Flavia Giannetti , Giorgio Stefani

We obtain a small improvement of Gallagher's larger sieve and we extend it to higher dimensions. We also obtain two interesting upper bounds for the number of solutions to polynomial congruences.

Number Theory · Mathematics 2018-12-27 Patrick Letendre

We give the first super-polynomial (in fact, mildly exponential) lower bounds for tolerant testing (equivalently, distance estimation) of monotonicity, unateness, and juntas with a constant separation between the "yes" and "no" cases.…

Computational Complexity · Computer Science 2023-09-25 Xi Chen , Anindya De , Yuhao Li , Shivam Nadimpalli , Rocco A. Servedio

This paper proposes new quadratic constraints (QCs) to bound a quadratic polynomial. Such QCs can be used in dissipation ineqaulities to analyze the stability and performance of nonlinear systems with quadratic vector fields. The proposed…

Dynamical Systems · Mathematics 2022-09-09 Shih-Chi Liao , Maziar S. Hemati , Peter Seiler

We give a simple formula for the signature of a foldable triangulation of a lattice polygon in terms of its boundary. This yields lower bounds on the number of real roots of certain of systems of polynomial equations known as "Wronski…

Metric Geometry · Mathematics 2015-07-31 Michael Joswig , Günter M. Ziegler

We study lower bounds for the self-intersection of the canonical divisor of "canonical varieties" (i.e. varieties whose canonical linear system gives a birational map). We give some improvements for the known results in the case of surfaces…

Algebraic Geometry · Mathematics 2007-05-23 Miguel A. Barja

We represent the number of mxn non-negative integer matrices (contingency tables) with prescribed row sums and column sums as the expected value of the permanent of a non-negative random matrix with exponentially distributed entries. We…

Combinatorics · Mathematics 2007-05-23 Alexander Barvinok

In recent work, the authors derived a tropical interpretation of monotone and strictly monotone double Hurwitz numbers. In this paper, we apply the technique of tropical flows to this interpretation in order to provide a new proof of the…

Algebraic Geometry · Mathematics 2019-05-08 Marvin Anas Hahn , Danilo Lewanski

In this note, we describe a new link between Perelman's monotonicity formula for the reduced volume and ideas from optimal transport theory.

Differential Geometry · Mathematics 2010-07-08 S. Brendle

Let $\mathcal{P} \subset \mathbb{R}^d$ be a lattice polytope of dimension $d$. Let $b$ denote the number of lattice points belonging to the boundary of $\mathcal{P}$ and $c$ that to the interior of $\mathcal{P}$. It follows from a lower…

Combinatorics · Mathematics 2023-01-25 Ichiro Sainose , Ginji Hamano , Tatsuo Emura , Takayuki Hibi

We present lower bounds for the coefficients of Ehrhart polynomials of convex lattice polytopes in terms of their volume. Concerning the coefficients of the Ehrhart series of a lattice polytope we show that Hibi's lower bound is not true…

Metric Geometry · Mathematics 2008-02-26 Martin Henk , Makoto Tagami

Motivated by problems of uncertainty propagation and robust estimation we are interested in computing a polynomial sublevel set of fixed degree and minimum volume that contains a given semialgebraic set K. At this level of generality this…

Optimization and Control · Mathematics 2012-10-12 Fabrizio Dabbene , Didier Henrion

We investigate two classes of multivariate polynomials with variables indexed by the edges of a uniform hypergraph and coefficients depending on certain patterns of union of edges. These polynomials arise naturally to model job-occupancy in…

Optimization and Control · Mathematics 2023-08-02 Daniel Brosch , Monique Laurent , Andries Steenkamp

We prove the existence of closed hypersurfaces of prescribed scalar curvature in globally hyperbolic Lorentzian manifolds provided there are barriers.

Differential Geometry · Mathematics 2016-02-26 Christian Enz

In this paper, new relations between the derivatives of the Legendre polynomials are obtained, and by these relations, new upper bounds for the Legendre coefficients of differentiable functions are presented. These upper bounds are sharp…

Numerical Analysis · Mathematics 2022-07-28 M. Hamzehnejad , M. M. Hosseini , A. Salemi

In this paper, we use the well-known background method to obtain a rigorous lower bound on the volume flow rate through a helical pipe driven by a pressure differential in the limit of large Reynolds number. As a consequence, we also obtain…

Fluid Dynamics · Physics 2020-10-28 Anuj Kumar

This paper focuses on martingale optimal transport problems when the martingales are assumed to have bounded quadratic variation. First, we give a result that characterizes the existence of a probability measure satisfying some convex…

Probability · Mathematics 2020-03-18 Erhan Bayraktar , Xin Zhang , Zhou Zhou

We count algebraic points of bounded height and degree on the graphs of certain functions analytic on the unit disk, obtaining a bound which is polynomial in the degree and in the logarithm of the multiplicative height. We combine this work…

Number Theory · Mathematics 2019-02-12 Gareth Boxall , Gareth Jones , Harry Schmidt

We construct an explicit lower bound for the volume of a complex hyperbolic orbifold that depends only on dimension.

Geometric Topology · Mathematics 2013-11-28 Ilesanmi Adeboye , Guofang Wei