Results 11 to 20 of about 122,363 (269)

Noncommutative Partial Convexity Via $$\Gamma $$-Convexity [PDF]

open access: yesThe Journal of Geometric Analysis, 2020
Motivated by classical notions of partial convexity, biconvexity, and bilinear matrix inequalities, we investigate the theory of free sets that are defined by (low degree) noncommutative matrix polynomials with constrained terms. Given a tuple of symmetric polynomials $\Gamma$, a free set is called $\Gamma$-convex if it closed under isometric ...
Jury, Michael   +4 more
openaire   +3 more sources

Convex Biclustering [PDF]

open access: yesBiometrics, 2016
SummaryIn the biclustering problem, we seek to simultaneously group observations and features. While biclustering has applications in a wide array of domains, ranging from text mining to collaborative filtering, the problem of identifying structure in high-dimensional genomic data motivates this work.
Chi, Eric C.   +2 more
openaire   +4 more sources

Convex Functions on Convex Polytopes [PDF]

open access: yesProceedings of the American Mathematical Society, 1968
The behavior of convex functions is of interest in connection with a wide variety of optimization problems. It is shown here that this behavior is especially simple, in certain respects, when the domain is a polytope or belongs to certain classes of sets closely related to polytopes; moreover, the polytopes and related classes are actually ...
Gale, David   +2 more
openaire   +1 more source

Terracini convexity [PDF]

open access: yesMathematical Programming, 2022
AbstractWe present a generalization of the notion of neighborliness to non-polyhedral convex cones. Although a definition of neighborliness is available in the non-polyhedral case in the literature, it is fairly restrictive as it requires all the low-dimensional faces to be polyhedral.
James Saunderson, Venkat Chandrasekaran
openaire   +4 more sources

Convex-cyclic matrices, convex-polynomial interpolation and invariant convex sets [PDF]

open access: yesOperators and Matrices, 2017
We define a convex-polynomial to be one that is a convex combination of the monomials $\{1, z, z^2, \ldots\}$. This paper explores the intimate connection between peaking convex-polynomials, interpolating convex-polynomials, invariant convex sets, and the dynamics of matrices.
Feldman, Nathan S., McGuire, Paul
openaire   +2 more sources

k-Fractional Estimates of Hermite–Hadamard Type Inequalities Involving k-Appell’s Hypergeometric Functions and Applications

open access: yesFractal and Fractional, 2019
The main objective of this paper is to obtain certain new k-fractional estimates of Hermite−Hadamard type inequalities via s-convex functions of Breckner type essentially involving k-Appell’s hypergeometric functions.
Muhammad Uzair Awan   +3 more
doaj   +1 more source

The extensive 1-median problem with radius on networks [PDF]

open access: yesOpuscula Mathematica, 2023
The median location problem concerns finding locations of one or several new facilities that minimize the overall weighted distances from the existing to the new facilities.
Tran Hoai Ngoc Nhan   +2 more
doaj   +1 more source

Infinitesimal Convexity Implies Local Convexity [PDF]

open access: yesIndiana University Mathematics Journal, 1974
(the tangent space at p) such that expU has no points of M onthe \inside" of L. By the inside of Lwe mean the component of a tubularneighbor hood with Ldeleted which corresponds to the negative multiplesof the orienting normal vector eld under exp. The exponential maps arethose of M.It is an immediate consequence of one of the standard interpretations ...
openaire   +1 more source

Impact of Concave and Convex Solid Surfaces By Liquid-Like Projectiles

open access: yesTikrit Journal of Engineering Sciences, 2007
A theoretical and experimental investigation of the normal impact of a flat-ended liquid slug onto ductile cylindrical solid targets is presented. The liquid slug is simulated by wax which is known to behave as a liquid in high speed impact situations ...
Riyadh N. Kiter, Sabah A. L. Salem
doaj   +1 more source

Non-Linear Inner Structure of Topological Vector Spaces

open access: yesMathematics, 2021
Inner structure appeared in the literature of topological vector spaces as a tool to characterize the extremal structure of convex sets. For instance, in recent years, inner structure has been used to provide a solution to The Faceless Problem and to ...
Francisco Javier García-Pacheco   +3 more
doaj   +1 more source

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