Results 31 to 40 of about 5,113,236 (295)

Strict positive definiteness on spheres via disk polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We characterize complex strictly positive definite functions on spheres in two cases, the unit sphere of ℂq, q≥3, and the unit sphere of the complex ℓ2. The results depend upon the Fourier-like expansion of the functions in terms of disk polynomials and,
V. A. Menegatto, A. P. Peron
doaj   +1 more source

Predicative definite NPIs in Norwegian

open access: yesNordlyd: Tromsø University Working Papers on Language & Linguistics, 2011
In Norwegian, a weak quantifier or a scalar adjective with a positive value may combine with a definite noun and thereby form an attenuating NPI. These phrases, which I call predicative definite NPIs, are exceptional as nominal phrases, since they do not
Marit Julien
doaj   +1 more source

Spectral Analysis of One Class of Positive-Definite Operators and Their Application in Fractional Calculus

open access: yesMathematics, 2023
This paper is devoted to the spectral analysis of one class of integral operators, associated with the boundary-value problems for differential equations of fractional order.
Tatiana Matseevich, Temirkhan Aleroev
doaj   +1 more source

WAYS OF EXPRESSING THE CATEGORY “DEFINITENESS – INDEFINITENESS” IN RUSSIAN, TATAR AND GERMAN LANGUAGES (COMPARATIVE ASPECT)

open access: yesМногоязычие в образовательном пространстве, 2021
The purpose of this study is to conduct a comparative typological analysis of the means of expressing the category “Definiteness / Indefiniteness” in German, Tatar and Russian languages and, building on this analysis, to develop a system of exercises ...
A. A. Sibgatullina
doaj   +1 more source

Nonsingularity, positive definiteness, and positive invertibility under fixed-point data rounding [PDF]

open access: yes, 2007
summary:For a real square matrix $A$ and an integer $d\ge 0$, let $A_{(d)}$ denote the matrix formed from $A$ by rounding off all its coefficients to $d$ decimal places.
Rohn, Jiří
core   +1 more source

Using stability analysis of discrete elastic systems to study the buckling of nanostructures

open access: yesArchives of Mechanics, 2012
Stubility/instability criteria of discrete elastic systems are used to study the buckling of nanostructures. The deformation of nanostructures is simulated by solving the nonlinear equations of molecular mechanics.
S.N. Korobeynikov   +3 more
doaj   +1 more source

Stable positive definite functions [PDF]

open access: yesTransactions of the American Mathematical Society, 1975
This paper investigates the stability of positive definite functions on locally compact groups under one parameter groups of automorphisms. As an application of this it is shown that the only probability distributions on
Parthasarathy, K. R., Schmidt, K.
openaire   +2 more sources

On a conjecture concerning positive semi-definiteness [PDF]

open access: yes, 2019
In [7] a conjecture relating the positive definiteness of a similarity with its transitivity with respect to the Lukasiewicz t-norm is made. In its current form, the conjecture is not true but from a modified version interesting consequences can be ...
Recasens Ferrés, Jorge
core   +1 more source

Ordering positive definite matrices [PDF]

open access: yesInformation Geometry, 2018
We introduce new partial orders on the set Sn+$$S^+_n$$ of positive definite matrices of dimension n derived from the affine-invariant geometry of Sn+$$S^+_n$$. The orders are induced by affine-invariant cone fields, which arise naturally from a local analysis of the orders that are compatible with the homogeneous geometry of Sn+$$S^+_n$$ defined by ...
Cyrus Mostajeran, Rodolphe Sepulchre
openaire   +3 more sources

Positive definite indistinguishability operators [PDF]

open access: yesFuzzy Sets and Systems, 2020
Peer ...
Recasens Ferrés, Jorge   +1 more
openaire   +4 more sources

Home - About - Disclaimer - Privacy