Results 81 to 90 of about 5,774,152 (370)

M-tensors and The Positive Definiteness of a Multivariate Form [PDF]

open access: yes, 2012
We study M-tensors and various properties of M-tensors are given. Specially, we show that the smallest real eigenvalue of M-tensor is positive corresponding to a nonnegative eigenvector.
Qi, Liqun, Zhang, Liping, Zhou, Guanglu
core  

Making Photoresponsive Metal–Organic Frameworks an Effective Class of Heterogeneous Photocatalyst

open access: yesAdvanced Functional Materials, EarlyView.
This review summarizes photoresponsive MOFs for photocatalytic applications, focusing on their capacity to enhance light harvesting, charge transfer, and surface reactions. While existing studies provide foundational insights, emerging characterization techniques enable a deeper understanding of photoresponsive MOFs.
Rui Liu   +3 more
wiley   +1 more source

Една можна класификација на експонентите на неопределеноста во македонскиот јазик

open access: yesSlavia Meridionalis, 2018
A possible classification of indefiniteness exponents in Macedonian The concept or category of determinateness finds its grammaticalization in the category of definiteness.
Бобан [Boban] Карапејовски [Karapejovski]
doaj   +1 more source

The Cauchy Exponential of Linear Functionals on the Linear Space of Polynomials

open access: yesMathematics, 2023
In this paper, we introduce the notion of the Cauchy exponential of a linear functional on the linear space of polynomials in one variable with real or complex coefficients using a functional equation by using the so-called moment equation. It seems that
Francisco Marcellán, Ridha Sfaxi
doaj   +1 more source

Certain Positive-Definite Kernels [PDF]

open access: yesProceedings of the American Mathematical Society, 1989
In one way or another, the extension of the standard Brownian motion process { B t : t ∈ [ 0 , ∞ ) } \{ {B_t}:t \in [0,\infty )\} to a (Gaussian) random field { B t
Edward C. Waymire, Mina Ossiander
openaire   +1 more source

Experimental and Theoretical Confirmation of Covalent Bonding in α‐Pu

open access: yesAdvanced Functional Materials, EarlyView.
From a combination of Reverse Monte Carlo dynamic rigid body fitting to the pair distribution functional and novel density functional approaches, the existence of covalent bonding is confirmed in α‐plutonium alongside other bonding types (i.e. mixed bonding schemes).
Alexander R. Muñoz   +10 more
wiley   +1 more source

Salt‐Compact Albumin as a New Pure Protein‐based Biomaterials: From Design to In Vivo Studies

open access: yesAdvanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
A new class of materials built entirely of native albumin protein is designed using a simple protocol based on salt‐assisted compaction, breaking with current crosslinking strategies. This green process leads, surprisingly, to water‐insoluble handable materials with high preservation of their native protein structures and Young's modulus close to that ...
Eya Aloui   +19 more
wiley   +1 more source

Positive Definiteness of High-Order Subdifferential and High-Order Optimality Conditions in Vector Optimization Problems

open access: yesAbstract and Applied Analysis, 2013
We obtain a new Taylor's formula in terms of the order subdifferential of a function from to . As its applications in optimization problems, we build order sufficient optimality conditions of this kind of functions and order necessary conditions ...
He Qinghai, Zhang Binbin
doaj   +1 more source

On the sign definiteness of Liapunov functionals and stability of a linear delay equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 1998
In this paper we give a new definition of the positive-definiteness of the Liapunov functional involved in the stability and asymptotic stability investigation.
L. B. Knyazhishche, V. A. Scheglov
doaj   +1 more source

Positive definiteness, reproducing kernel Hilbert spaces and beyond

open access: yes, 2013
Positive definiteness, reproducing kernel Hilbert spaces, integral operators and Mercer’s theorem in its various formats are common topics in many branches of mathematics.
J. C. Ferreira, V. Menegatto
semanticscholar   +1 more source

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