Results 21 to 30 of about 3,117,111 (256)

A note on multivariate majorization [PDF]

open access: yesJournal of Mahani Mathematical Research, 2022
‎A matrix $A$ is said to be multivariate majorized by a matrix $B$‎, ‎written $A\prec B$‎, ‎if there exists a doubly stochastic matrix $D$ such that $A = BD$‎ .
Mehdi Dehghanian, Ahmad Mohammadhasani
doaj   +1 more source

Classification of the extreme points of ${\mathcal L}_s(^2l_{\infty}^3)$ by computation

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
Let $l_{\infty}^3=\mathbb{R}^3$ be endowed with the supremum norm. In [Comment. Math. 2017,  57 (1), 1-7], S.G. Kim classified the extreme points of the unit ball of ${\mathcal L}_s(^2l_{\infty}^3)$ only using Mathematica 8, where ${\mathcal L}_s(^2l_ ...
Sung Guen Kim
doaj   +1 more source

Some Properties of Certain Subclass of Meromorphic Functions Associated with $(p , q)$-derivative [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
In this paper, by making use of $(p , q) $-derivative operator we introduce a new subclass of meromorphically univalent functions. Precisely, we give a necessary and sufficient coefficient condition for functions in this class.
Mohammad Hassan Golmohammadi   +2 more
doaj   +1 more source

Extreme points of ${\mathcal L}_s(^2l_{\infty})$ and ${\mathcal P}(^2l_{\infty})$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
For $n\geq 2,$ we show that every extreme point of the unit ball of ${\mathcal L}_s(^2l_{\infty}^n)$ is extreme in ${\mathcal L}_s(^2l_{\infty}^{n+1})$, which answers the question in [Period. Math. Hungar. 2018, 77 (2), 274-290].
Sung Guen Kim
doaj   +1 more source

Extreme and exposed symmetric bilinear forms on the space ${\mathcal L}_{s}(^2 l_{\infty}^2)$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
We classify extreme points and exposed points of the unit ball of the space of bilinear symmetric forms on the real Banach space of bilinear symmetric forms on $l_{\infty}^2.$ It is shown that for this case, the set of extreme points is equal to the set ...
Sung Guen Kim
doaj   +1 more source

An application of the Choquet theorem to the study of randomly-superinvariant measures [PDF]

open access: yesOpuscula Mathematica, 2012
Given a real valued random variable \(\Theta\) we consider Borel measures \(\mu\) on \(\mathcal{B}(\mathbb{R})\), which satisfy the inequality \(\mu(B) \geq E\mu(B-\Theta)\) (\(B \in \mathcal{B}(\mathbb{R})\)) (or the integral inequality \(\mu(B) \geq ...
Teresa Rajba
doaj   +1 more source

On Janowski type p-harmonic functions associated with generalized Sǎlǎgean operator

open access: yesAIMS Mathematics, 2021
In this paper, some classes of Janowski type p-harmonic functions associated with the generalized Sǎlǎgean operator are introduced. Further, coefficient conditions, distortion estimates and the other properties of the classes are obtained.
Shuhai Li, Lina Ma, Huo Tang
doaj   +1 more source

Geometric Invariants of Surjective Isometries between Unit Spheres

open access: yesMathematics, 2021
In this paper we provide new geometric invariants of surjective isometries between unit spheres of Banach spaces. Let X,Y be Banach spaces and let T:SX→SY be a surjective isometry.
Almudena Campos-Jiménez   +1 more
doaj   +1 more source

Extreme-Point-based Heuristics for the Three-Dimensional Bin Packing problem [PDF]

open access: yes, 2008
One of the main issues in addressing three-dimensional packing problems is finding an efficient and accurate definition of the points at which to place the items inside the bins, because the performance of exact and heuristic solution methods is actually
Crainic T. G.   +9 more
core   +1 more source

Evaluating carbon-electrode dielectrophoresis under the ASSURED criteria

open access: yesFrontiers in Medical Technology, 2022
Extreme point-of-care refers to medical testing in unfavorable conditions characterized by a lack of primary resources or infrastructure. As witnessed in the recent past, considerable interest in developing devices and technologies exists for extreme ...
Rodrigo Martinez-Duarte   +3 more
doaj   +1 more source

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