Results 21 to 30 of about 75,363 (311)

On local derivatives [PDF]

open access: yesAnnales Polonici Mathematici, 1983
Local derivatives of functions of several variables having values in a fixed Banach space are considered. Local derivatives of functions of one real variable with values in a Banach space were considered by \textit{J. Mikusiński} [in ''The Bochner Integral'', (1978; Zbl 0369.28010)], and earlier, in a Hilbert space by \textit{K. Skórnik} [in ''The form
openaire   +1 more source

Covariant Derivative of Fermions and All That

open access: yesUniverse, 2022
We present detailed pedagogical derivation of covariant derivative of fermions and some related expressions, including commutator of covariant derivatives and energy-momentum tensor of a free Dirac field.
Ilya L. Shapiro
doaj   +1 more source

On rigid derivations in rings

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
We prove that in a ring $R$ with an identity there exists an element $a\in R$ and a nonzero derivation $d\in Der R$ such that $ad(a)\neq 0$. A ring $R$ is said to be a $d$-rigid ring for some derivation $d \in Der R$ if  $d(a)=0$ or $ad(a)\neq 0$ for all
O.D. Artemovych, M.P. Lukashenko
doaj   +1 more source

Local BCJ numerators for ten-dimensional SYM at one loop

open access: yesJournal of High Energy Physics, 2021
We obtain local numerators satisfying the BCJ color-kinematics duality at one loop for super-Yang-Mills theory in ten dimensions. This is done explicitly for six points via the field-theory limit of the genus-one open superstring correlators for ...
Elliot Bridges, Carlos R. Mafra
doaj   +1 more source

Local linear scale factors in map projections in the direction of coordinate axes

open access: yesGeo-spatial Information Science, 2021
This paper explains that the terms “horizontal and vertical scales” are not appropriate in map projections theory. Instead, the authors suggest using the term “scales in the direction of coordinate axes.” Since it is not possible to read a local linear ...
Miljenko Lapaine   +2 more
doaj   +1 more source

Derivations, local and 2-local derivations of standard operator algebras

open access: yes, 2022
Let X be a Banach space over field F (R or C). Denote by B(X) the set of all bounded linear operators on X and by F(X) the set of all finite rank operators on X. A subalgebra A of B(X) is called a standard operator algebra if A contain F(X). We give a brief proof of a well-known result that every derivation from A into B(X) is inner.
He, Jun, Zhao, Haixia, An, Guangyu
openaire   +2 more sources

Derivation of a fourth-order Co-simulation method for linear systems

open access: yesResults in Engineering, 2022
In this article, we present a detailed derivation of a fourth order co-simulation method. This method is implicit and based on Hermite extrapolation with two support points and their derivatives.
Andrés Acosta   +3 more
doaj   +1 more source

LOCAL DERIVATIONS ON ALGEBRAS OF MEASURABLE OPERATORS [PDF]

open access: yesCommunications in Contemporary Mathematics, 2011
The paper is devoted to local derivations on the algebra [Formula: see text] of τ-measurable operators affiliated with a von Neumann algebra [Formula: see text] and a faithful normal semi-finite trace τ. We prove that every local derivation on [Formula: see text] which is continuous in the measure topology, is in fact a derivation.
Albeverio, S.   +3 more
openaire   +2 more sources

Polarization in heavy ion collisions: A theoretical review [PDF]

open access: yesEPJ Web of Conferences, 2023
In these proceedings I discuss the recent progress in the theory of spin polarization in relativistic fluids. To date, a number of studies have begun to examine the impact of the shear tensor on the local spin polarization and whether this contribution ...
Buzzegoli Matteo
doaj   +1 more source

Locally Nilpotent Monomial Derivations [PDF]

open access: yesBulletin of the Polish Academy of Sciences Mathematics, 2004
Summary: We prove that every locally nilpotent monomial \(k\)-derivation of \(k[X_1,\ldots ,X_n]\) is triangular, whenever \(k\) is a ring of characteristic zero. A method of testing monomial \(k\)-derivations for local nilpotency is also presented.
openaire   +2 more sources

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