Results 11 to 20 of about 1,012,165 (278)

On sums of narrow and compact operators

open access: yesPositivity, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mikhail Popov
exaly   +3 more sources

On the Sum of Narrow Orthogonally Additive Operators

open access: yesRussian Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

Narrow operators and the Daugavet property for ultraproducts [PDF]

open access: yesPositivity, 2005
We show that if $T$ is a narrow operator on $X=X_{1}\oplus_{1} X_{2}$ or $X=X_{1}\oplus_{\infty} X_{2}$, then the restrictions to $X_{1}$ and $X_{2}$ are narrow and conversely. We also characterise by a version of the Daugavet property for positive operators on Banach lattices which unconditional sums of Banach spaces inherit the Daugavet property, and
Vladimir Kadets, Dirk Werner
exaly   +3 more sources

Some problems on narrow operators on function spaces

open access: yesOpen Mathematics, 2014
Popov Mikhail   +2 more
doaj   +2 more sources

On linear sections of orthogonally additive operators

open access: yesМатематичні Студії, 2022
Our first result asserts that, for linear regular operators acting from a Riesz space with the principal projection property to a Banach lattice with an order continuous norm, the $C$-compactness is equivalent to the $AM$-compactness. Next we prove that,
A. Gumenchuk, I. Krasikova, M. Popov
doaj   +1 more source

Arc-based sensing in narrow groove pipe welding [PDF]

open access: yes, 2006
Big gains in productivity are found in tandem and dual tandem pipeline welding but require highly skilled operators who have to control the position of the torch very accurately for long periods. This leads to high demands on the skills and stamina of
Gil Teixeira Lopes, Agostinho
core   +7 more sources

Widening and narrowing operators for abstract interpretation [PDF]

open access: yesComputer Languages, Systems & Structures, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CORTESI, Agostino, ZANIOLI, Matteo
openaire   +3 more sources

UNCONDITIONALLY CONVERGENT SERIES OF OPERATORS AND NARROW OPERATORS ON $L_1$ [PDF]

open access: yesBulletin of the London Mathematical Society, 2005
We introduce a class of operators on $L_1$ that is stable under taking sums of pointwise unconditionally convergent series, contains all compact operators and does not contain isomorphic embeddings. It follows that any operator from $L_1$ into a space with an unconditional basis belongs to this class.
Kadets, Vladimir   +2 more
openaire   +3 more sources

Adaptive dating and fast proposals: Revisiting the phylogenetic relaxed clock model.

open access: yesPLoS Computational Biology, 2021
Relaxed clock models enable estimation of molecular substitution rates across lineages and are widely used in phylogenetics for dating evolutionary divergence times.
Jordan Douglas   +2 more
doaj   +1 more source

An estimate for narrow operators on $$L^p([0, 1])$$ [PDF]

open access: yesArchiv der Mathematik, 2020
AbstractWe prove a theorem, which generalises C. Franchetti’s estimate for the norm of a projection onto a rich subspace of $$L^p([0, 1])$$ L p ( [
Eugene Shargorodsky, Teo Sharia
openaire   +2 more sources

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