Results 21 to 30 of about 344,504 (276)

BPX-Preconditioning for isogeometric analysis [PDF]

open access: yes, 2012
We consider elliptic PDEs (partial differential equations) in the framework of isogeometric analysis, i.e., we treat the physical domain by means of a B-spline or Nurbs mapping which we assume to be regular.
Buffa, Annalisa   +3 more
core   +2 more sources

When are multiplicative mappings additive? [PDF]

open access: yesProceedings of the American Mathematical Society, 1969
Summary: A theorem of \textit{C. E. Rickart} [Bull. Am. Math. Soc. 54, 758--764 (1948; Zbl 0032.24904), Theorem II] is generalized as follows: Theorem. Let \(R\) be a ring containing a family \(\{e_\alpha\mid \alpha\in A\}\) of idempotents which satisfies: (1) \(xR=0\) implies \(x=0\); (2) if \(e_\alpha Rx=0\) for each \(\alpha\in A\), then \(x=0\); (3)
openaire   +2 more sources

THE NEARLY ADDITIVE MAPS [PDF]

open access: yesBulletin of the Korean Mathematical Society, 2009
This note is a verification on the relations between almost lin- ear and nearly additive maps; and the continuity of almost multiplicative nearly additive maps. Also we consider the stability of nearly additive and almost linear maps.
Esmaeeil Ansari-Piri, Nasrin Eghbali
openaire   +1 more source

Additive Maps of Rank k Bivectors

open access: yesThe Electronic Journal of Linear Algebra, 2021
Let ${\cal U}$ and ${\cal V}$ be linear spaces over fields $\mathbb{F}$ and $\mathbb{K}$, respectively, such that Dim$\,{\cal U}=n\geqslant 2$ and $\left|\mathbb{F}\right|\geqslant 3$. Let $\bigwedge^2{\cal U}$ be the second exterior power of ${\cal U}$. Fixing an even integer $k$ satisfying $\frac{n-1}{2}\leqslant k\leqslant n$, it is shown that a map
Chooi, Wai Leong, Kwa, Kiam Heong
openaire   +3 more sources

2D association and integrative omics analysis in rice provides systems biology view in trait analysis. [PDF]

open access: yes, 2018
The interactions among genes and between genes and environment contribute significantly to the phenotypic variation of complex traits and may be possible explanations for missing heritability.
Dai, Xinbin   +3 more
core   +2 more sources

On orthogonally additive mappings, IV

open access: yesAequationes Mathematicae, 1989
[For part II see the first author, Publ. Math. 35, No.3/4, 241-249 (1988; reviewed above).] Let \(\Phi\) denote a field of characteristic \(\neq 2\), X a \(\Phi\)-vector space of dimension \(\geq 2\) and \((Y,+)\) an abelian group. Furthermore let \(\perp\), which is called orthogonality on X, be a binary relation satisfying certain appropriate ...
Rätz, J., Szabó, Gy.
openaire   +1 more source

Conditional QTL Mapping of Sedimentation Volume on Seven Quality Traits in Common Wheat

open access: yesJournal of Integrative Agriculture, 2013
To evaluate the possible genetic interrelationships between flour components and the sedimentation volume (SD), a doubled haploid (DH) population comprising 168 lines were used to identify the conditional quantitative trait loci (QTLs) for SD in three ...
Zhi-ying DENG   +8 more
doaj   +1 more source

A class of nonlinear centralizers on nest algebras [PDF]

open access: yesJournal of Hebei University of Science and Technology
In order to extend the basic theory of operator algebras, the conditions for a class of nonlinear mappings to become additive centralizers on nest algebras were studied.
Yude JI, Bing WU, Cui YANG
doaj   +1 more source

Functional Inequalities Associated with Additive Mappings [PDF]

open access: yesAbstract and Applied Analysis, 2008
The functional inequality ∥f(x) + 2f(y) + 2f(z)∥ ≤ ∥2f(x/2 + y + z)∥ + ϕ  (x, y, z) (x, y, z ∈ G) is investigated, where G is a group divisible by 2, f : G → X and ϕ : G3 → [0, ∞) are mappings, and X is a Banach space. The main result of the paper states that the assumptions above together with (1) ϕ(2x, −x, 0) = 0 = ϕ(0, x, −x) (x ∈ G) and (2) limn ...
Roh, Jaiok, Chang, Ick-Soon
openaire   +3 more sources

The Cauchy–Optimal Stability Results for Cauchy–Jensen Additive Mappings in the Fuzzy Banach Space and the Unital Fuzzy Banach Space

open access: yesAxioms, 2023
In this article, we apply a new class of fuzzy control functions to approximate a Cauchy additive mapping in fuzzy Banach space (FBS). Further, considering the unital FBS (UFBS), we will investigate the isomorphisms defined in this space.
Zahra Eidinejad   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy