نتایج جستجو برای: quasi subjects

تعداد نتایج: 414465  

2010
R. Mesiar H. Bustince J. Fernandez

In this paper we address the problem of a-migrativity (for a fixed a) for semicopulas, copulas and quasi-copulas. We introduce the concept of an a-sum of semicopulas. This new concept allows us to completely characterize a-migrative semicopulas and copulas. Moreover, a-sums also provide a means to obtain a partial characterization of a-migrative quasicopulas. 2010 Elsevier Inc. All rights reser...

2003
Kashinath Chatterjee Ashish Das Aloke Dey

Generalizing orthogonal arrays, a new class of arrays called quasiorthogonal arrays, are introduced and it is shown that fractional factorial plans represented by these arrays are universally optimal under a wide class of models. Some methods of construction of quasi-orthogonal arrays are also described.

Journal: :SIAM Journal on Optimization 1991
William C. Davidon

Journal: :CoRR 2015
Yun Fan Hualu Liu

We introduce quasi-cyclic codes of index 1 1 2 , construct such codes in terms of polynomials and matrices; and prove that the quasi-cyclic codes of index 1 1 2 are asymptotically good. MSC classes: 94B05, 94B65, 15B52.

Journal: :International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 2011
Fabrizio Durante Juan Fernández-Sánchez

Condition (C3) is called the 2–increasing property of C, and VC ([x1, x2]× [y1, y2]) is called the C–volume of the rectangle [x1, x2]× [y1, y2]. According to Sklar’s Theorem, copulas are functions that express the rankinvariant dependence between a pair of continuous random variables and, as such, they have been largely used in statistical applications . In particular, examples of copulas are g...

2008
KASRA RAFI SAUL SCHLEIMER

When the boundary of the curve complex is connected any quasi-isometry is bounded distance from a simplicial automorphism. As a consequence, when the boundary is connected the quasi-isometry type of the curve complex determines the homeomorphism type of the surface.

Journal: :CoRR 2016
Kenza Guenda T. Aaron Gulliver

This paper considers the equivalence problem for quasi-cyclic codes over finite fields. The results obtained are used to construct isodual quasi-cyclic codes.

Journal: :journal of algebraic systems 2014
ali taherifar

an ideal i of a ring r is called right baer-ideal if there exists an idempotent e 2 r such that r(i) = er. we know that r is quasi-baer if every ideal of r is a right baer-ideal, r is n-generalized right quasi-baer if for each i e r the ideal in is right baer-ideal, and r is right principaly quasi-baer if every principal right ideal of r is a right baer-ideal. therefore the concept of baer idea...

Journal: :Computer Physics Communications 2011
Tarcísio M. Rocha Filho Annibal Figueiredo

We present the package SADE (Symmetry Analysis of Differential Equations) for the determination of symmetries and related properties of systems of differential equations. The main methods implemented are: Lie, non classical, Lie-Bäcklund and potential symmetries, invariant solutions, first-integrals, Nöther theorem for both discrete and continuous systems, solution of ordinary differential equa...

2007
Philip L. Bowers Kim Ruane

We prove that whenever G is negatively curved and ? = G ZZ n acts geometrically on two CAT(0)-spaces X and X 0 , their visual boundaries are ?-equivariantly homeomorphic, answering aarmatively a question of Gromov in this special case. However, we give a simple example that shows that the natural ?-equivariant quasi-isometry from X to X 0 does not continuously extend to a homeomorphism of visua...

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