Results 71 to 80 of about 485,398 (210)

Rigorous Formulation of the Lasing Eigenvalue Problem as a Spectral Problem for a Fredholm Operator Function [PDF]

open access: yes, 2018
We propose a new convenient for mathematical investigation formulation of the lasingeigenvalue problem as a spectral problem for an operator-valued function, which involves boundary integral operators.
Karchevskii, Evgenii   +2 more
core   +3 more sources

Index-like theorem for massless fermions in spherically symmetric monopole backgrounds

open access: yesJournal of High Energy Physics, 2022
In this paper we study massless fermions coupled to spherically symmetric SU(N) monopoles without Yukawa couplings between the Higgs and fermion fields.
T. Daniel Brennan
doaj   +1 more source

Selective Packaging of miR‐22 and miR‐29 Orthologues into Extracellular Vesicles of the Porcine Whipworm Trichuris Suis

open access: yesJournal of Extracellular Vesicles, Volume 15, Issue 9, September 2026.
ABSTRACT Helminths modulate host immunity, and in this respect, the porcine whipworm Trichuris suis has been explored clinically as an immunotherapy for inflammatory diseases. T. suis secretes a complex mixture of excretory/secretory products (ESP), including extracellular vesicles (EVs), nanosized membranous particles with bioactive cargoes of lipids,
Bradley Whitehead   +19 more
wiley   +1 more source

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

Toeplitz operators and Wiener-Hopf factorisation: an introduction

open access: yesConcrete Operators, 2017
Wiener-Hopf factorisation plays an important role in the theory of Toeplitz operators. We consider here Toeplitz operators in the Hardy spaces Hp of the upper half-plane and we review how their Fredholm properties can be studied in terms of a Wiener-Hopf
Câmara M. Cristina
doaj   +1 more source

Factorization of fredholm operators on analytic functions

open access: yesJournal of Functional Analysis, 1975
AbstractLet Ω be a simply connected domain in the complex plane, and A(Ωn), the space of functions which are defined and analytic on Ωn, if K is the operator on elements u(t, a1, …, an) of A(Ωn + 1) defined in terms of the kernels ki(t, s, a1, …, an) in A(Ωn + 2) by Ku = ∑i = 1n ∝aitk i(t, s, a1, …, an) u(s, a1, …, an) ds ϵ A(Ωn + 1) and I is the ...
MacNabb, Alex, Schumitzky, Alan
openaire   +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

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 factorization of Wiener-Hopf scalar and matrix kernels [PDF]

open access: yes, 2007
A general theory to factorize the Wiener-Hopf (W-H) kernel using Fredholm Integral Equations (FIE) of the second kind is presented. This technique, hereafter called Fredholm factorization, factorizes the W-H kernel using simple numerical quadrature.
V. Daniele   +3 more
core   +1 more source

Factorization of Fredholm operators in operator algebras

open access: yesMatematychni Studii, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

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