Results 51 to 60 of about 500,094 (203)

ON A CLASS OF GENERALIZED FREDHOLM OPERATORS, V

open access: yesDemonstratio Mathematica, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +5 more sources

Edge Density Expansions for the Classical Gaussian and Laguerre Ensembles

open access: yesStudies in Applied Mathematics, Volume 157, Issue 3, September 2026.
ABSTRACT Recent work of Bornemann has uncovered hitherto hidden integrable structures relating to the asymptotic expansion of quantities at the soft edge of the Gaussian and Laguerre random matrix ensembles. These quantities are spacing distributions and the eigenvalue density, and the findings cover the cases of the three symmetry classes: orthogonal,
Peter J. Forrester   +2 more
wiley   +1 more source

Cyclic behaviour of Volterra composition operators [PDF]

open access: yes, 2011
We determine the cyclic behaviour of Volterra composition operators, which are defined as $(V_\phif)(x) =\int_0^{\phi(x)}f(t) dt$, $f ? L^p[0, 1]$, 1\leq p <\infty$,where $?$ is a measurable self-map of [0, 1].
Stanislav Shkarin   +5 more
core   +1 more source

Block Toeplitz operators with frequency-modulated semi-almost periodic symbols

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
This paper is concerned with the influence of frequency modulation on the semi-Fredholm properties of Toeplitz operators with oscillating matrix symbols.
A. Böttcher, S. Grudsky, I. Spitkovsky
doaj   +1 more source

Multiplication operators on the space of functions of bounded variation

open access: yesDemonstratio Mathematica, 2017
In this paper,we study the properties of the multiplication operator acting on the bounded variation space BV[0, 1]. In particular,we show the existence of non-null compact multiplication operators on BV[0, 1] and non-invertible Fredholm multiplication ...
Astudillo-Villalba Franklin R.   +1 more
doaj   +1 more source

Simple homotopy theory for Fukaya categories

open access: yesJournal of Topology, Volume 19, Issue 3, September 2026.
Abstract We develop a categorical framework for simple homotopy theory in Fukaya categories, based on the fundamental group of the ambient symplectic manifold. When the first Chern class vanishes, we show that any isomorphism in the Fukaya category of a Weinstein manifold has trivial Whitehead torsion.
Yonghwan Kim
wiley   +1 more source

On the closed range problem for composition operators on the Dirichlet space

open access: yesConcrete Operators, 2019
We characterize closed range composition operators on the Dirichlet space for a particular class of composition symbols. The characterization relies on a result about Fredholm Toeplitz operators with BMO1 symbols, and with Berezin transforms of vanishing
Zorboska Nina
doaj   +1 more source

Heart failure‐induced reprogramming of salt‐evoked neurovascular coupling in the rat hypothalamus

open access: yesThe Journal of Physiology, Volume 604, Issue 18, Page 7845-7868, 15 September 2026.
Abstract figure legend In sham rat, hypertonic saline induces activation of the AVP neurons, leading to dendritic AVP release and subsequent V1aR‐mediated PA vasoconstriction resulting in local tissue hypoxia in the SON. In heart failure rat, hypertonic saline similarly induces activation of the AVP neuron leading to dendritic AVP release.
Ranjan K. Roy   +4 more
wiley   +1 more source

Fredholm Weighted Composition Operators on Dirichlet Space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
This paper characterizes bounded Fredholm, bounded invertible, and unitary weighted composition operators on Dirichlet space.
Liankuo Zhao
doaj   +1 more source

Fredholm Toeplitz operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1970
Whether a Toeplitz operator on H 2 {H^2}
Douglas, R. G., Sarason, D.
openaire   +2 more sources

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