Results 41 to 50 of about 3,117,111 (256)

Free extreme points span generalized free spectrahedra given by compact coefficients [PDF]

open access: yesarXiv, 2023
Matrix convexity generalizes convexity to the dimension free setting and has connections to many mathematical and applied pursuits including operator theory, quantum information, noncommutative optimization, and linear control systems. In the setting of classical convex sets, extreme points are central objects which exhibit many important properties ...
arxiv  

On the extreme points and strongly extreme points in Köther-Bochner spaces

open access: yesPublications de l'Institut Mathematique, 2012
We give the necessary conditions of extreme points and strongly extreme points in the unit ball of K?the-Bochner spaces. The conditions have been shown to be sufficient earlier.
Zhentao Hou, Jinghong Pan
openaire   +2 more sources

On the structure of support point sets

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
Let X be a metrizable compact convex subset of a locally convex space. Using Choquet's Theorem, we determine the structure of the support point set of X when X has countably many extreme points. We also characterize the support points of certain families
E. Azoff, R. younis
doaj   +1 more source

The Optimization of Bayesian Extreme Value: Empirical Evidence for the Agricultural Commodities in the US

open access: yesEconomies, 2021
Bayesian extreme value analysis was used to forecast the optimal point in agricultural commodity futures prices in the United States for cocoa, coffee, corn, soybeans and wheat. Data were collected daily between 2000 and 2020.
Jittima Singvejsakul   +2 more
doaj   +1 more source

Lower Bounds of Quantum Search for Extreme Point

open access: yes, 1998
We show that Durr-Hoyer's quantum algorithm of searching for extreme point of integer function can not be sped up for functions chosen randomly. Any other algorithm acting in substantially shorter time $o(\sqrt{2^n})$ gives incorrect answer for the ...
Grover L. K., Yuri Ozhigov
core   +3 more sources

On extreme points of the diffusion polytope [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2017
We consider a class of diffusion problems defined on simple graphs in which the populations at any two vertices may be averaged if they are connected by an edge. The diffusion polytope is the convex hull of the set of population vectors attainable using finite sequences of these operations.
Nathaniel J. Fisch   +2 more
openaire   +2 more sources

Convexity and Geodesic Metric Spaces

open access: yesپژوهش‌های ریاضی, 2021
In this paper, we first present a preliminary study on metric segments and geodesics in metric spaces. Then we recall the concept of d-convexity of sets and functions in the sense of Menger and study some properties of d-convex sets and d-convex ...
Sajad Ranjbar   +2 more
doaj  

Diameter-Aware Extreme Group Queries

open access: yesIEEE Access, 2018
In spatial databases, the objects have semantic attributes as well as geographic coordinates. Considering the two aspects, we propose the diameter-aware extreme group query (DiaEG query), which searches for good $k$ -item groups of objects. We mark the
Xi Guo   +3 more
doaj   +1 more source

The Statistical Hypotheses on Randomness of Factor Relations and Interrelations of Socio-Economic Processes [PDF]

open access: yesBìznes Inform, 2018
The models of factor relations and interrelations of socio-economic processes are based on the corresponding theoretical and economic provisions and hypotheses.
Ivashchenko Peter A.
doaj  

Analyzing Spatial Relations of Extreme Precipitations of Western Iran [PDF]

open access: yesجغرافیا و توسعه, 2017
Extreme precipitations at each point are those irregular precipitations which are situated in the trail and away from the focus point of the precipitation frequency distribution of that point.
golamali mozafari   +2 more
doaj   +1 more source

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