Results 11 to 20 of about 311,519 (317)

Convex Sequence and Convex Polygon

open access: yesAnnales Mathematicae Silesianae
In this paper, we deal with the question: under what conditions n distinct points Pi(xi, yi) (i = 1,…, n) provided x1
Goswami Angshuman R., Szalkai István
doaj   +3 more sources

On Column-Convex and Convex Carlitz Polyominoes [PDF]

open access: yesMathematics in Computer Science, 2021
In this paper, we introduce and study {\it Carlitz polyominoes}. In particular, we show that, as $n$ grows to infinity, asymptotically the number of \begin{enumerate} \item column-convex Carlitz polyominoes with perimeter $2n$ is \beq \frac{9\sqrt{2}(14+3\sqrt{3})}{2704\sqrt{πn^3}}4^n.
Toufik Mansour   +2 more
openaire   +2 more sources

Triangulability of convex graphs and convex skewness [PDF]

open access: yesDiscrete Mathematics, Algorithms and Applications, 2021
Suppose [Formula: see text] is a subgraph of a convex complete graph [Formula: see text] and [Formula: see text] contains no boundary edge of [Formula: see text] and [Formula: see text]. We determine necessary and sufficient conditions on [Formula: see text] such that [Formula: see text] admits a triangulation.
Niran Abbas Ali   +3 more
openaire   +3 more sources

A convex polynomial that is not sos-convex [PDF]

open access: yesMathematical Programming, 2011
15 ...
Amir Ali Ahmadi, Pablo A. Parrilo
openaire   +2 more sources

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

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

On φ-convexity of convex functions

open access: yesLinear Algebra and its Applications, 1998
The authors construct a non-trivial set \(\Phi\) of extended-real valued functions on \(R^n\) containing all affine functions, such that an extended-real valued function defined on \(R^n\) is convex if and only if it is \(\Phi\)-convex, i.e., it is the pointwise supremum of some subset of \(\Phi\). They also prove a new sandwich theorem.
Martínez-Legaz, Juan-Enrique   +1 more
openaire   +2 more sources

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

On the moduli of convexity [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
[EN] It is known that, given a Banach space (X, parallel to center dot parallel to), the modulus of convexity associated to this space delta X is a non-negative function, nondecreasing, bounded above by the modulus of convexity of any Hilbert space and satisfies the equation delta x(epsilon)/epsilon(2)
Guirao, A. J., Hájek, P. (Petr Pavel)
openaire   +3 more sources

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