Results 21 to 30 of about 37,281 (287)
Narrow operators (a survey) [PDF]
Banach Center Publications, 2011 M. M. Popov
openalex +2 more sources
On the sum of narrow and C-compact operators
Владикавказский математический журнал, 2018 В работе рассматриваются узкие линейные операторы, заданные на пространстве Банаха - Канторовича и принимающие значение в банаховом пространстве. Установлено, что сумма двух операторов S+T, где S - узкий оператор, а T- (bo)-непрерывный C-компактный оператор, также является узким оператором.
Nariman Abasov, Marat Pliev
openalex +3 more sources
Some problems on narrow operators on function spaces [PDF]
Open Mathematics, 2014 Popov Mikhail +2 more
doaj +2 more sources
A note on narrow operators in $L_\infty$
Matematychni Studii, 2009 I. Krasikova
openalex +2 more sources
On linear sections of orthogonally additive operators
Математичні 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
Journal of Telecommunications and Information Technology, 2023 The paper presents an idea to use weak derivatives in interval global optimization. It allows using the Newton operator to narrow domains of non-differentiable functions. Preliminary computational experiments are also presented.
Bartłomiej Jacek Kubica
doaj +1 more source
Adaptive dating and fast proposals: Revisiting the phylogenetic relaxed clock model.
PLoS 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
Widening and narrowing operators for abstract interpretation [PDF]
Computer Languages, Systems & Structures, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CORTESI, Agostino, ZANIOLI, Matteo
openaire +2 more sources
Radial symmetry for a generalized nonlinear fractional p-Laplacian problem
Nonlinear Analysis, 2021 This paper first introduces a generalized fractional p-Laplacian operator (–Δ)sF;p. By using the direct method of moving planes, with the help of two lemmas, namely decay at infinity and narrow region principle involving the generalized fractional p ...
Wenwen Hou +3 more
doaj +1 more source
Narrow-linewidth fiber laser operating at 155 μm [PDF]
Optics Letters, 1987 We report the fabrication and operation of an Er(3+)-doped silica single-mode fiber laser operating at 1.55 microm and using a distributed fiber grating to provide feedback. The output bandwidth was measured as 0.04 nm, significantly narrower than the conventional cavity design. The laser had a threshold of 13 mW and a slope efficiency of 5%.
Jauncey, I.M. +3 more
openaire +4 more sources