Results 11 to 20 of about 23,916 (184)

Unbounded B-Fredholm operators on Hilbert spaces [PDF]

, 2008
This paper is concerned with the study of a class of closed linear operators densely defined on a Hilbert space H and called B-Fredholm operators.
Berkani, M., Castro González, Nieves
core   +2 more sources

Evans function and Fredholm determinants [PDF]

, 2014
We explore the relationship between the Evans function, transmission coefficient and Fredholm determinant for systems of first order linear differential operators on the real line.
Karambal, Issa, Malham, Simon J. A
core   +3 more sources

$C_{0}$-Fredholm operators. IV [PDF]

Publicacions Matemàtiques, 1983
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +6 more sources

Level-Spacing Distributions and the Bessel Kernel [PDF]

, 1993
The level spacing distributions which arise when one rescales the Laguerre or Jacobi ensembles of hermitian matrices is studied. These distributions are expressible in terms of a Fredholm determinant of an integral operator whose kernel is expressible in
A. Edelman, A. Edelman, B.M. McCoy, B.V. Bronk, C.A. Tracy, C.E. Porter, Craig A. Tracy, E.L. Basor, E.W. Barnes, F.J. Dyson, G. Mahoux, G. Moore, H. Flaschka, Harold Widom, I.S. Gradshteyn, L.A. Pastur, M. Jimbo, M. Jimbo, M. Sato, M.J. Bowick, M.L. Mehta, M.L. Mehta, M.L. Mehta, P.J. Forrester, R.D. Kamien, T. Nagao, T.T. Wu, V.I. Gromak   +27 more
core   +3 more sources

Fredholm composition operators [PDF]

Proceedings of the American Mathematical Society, 1980
In this paper a necessary and sufficient condition for a composition operator C T {C_T} on L 2 [ 0 , 1 ] {L^2}[0,1] to be a Fredholm operator is given.
openaire   +1 more source

Elliptic operators and their symbols

Demonstratio Mathematica, 2019
We consider special elliptic operators in functional spaces on manifolds with a boundary which has some singular points. Such an operator can be represented by a sum of operators, and for a Fredholm property of an initial operator one needs a Fredholm ...
Vasilyev Vladimir
doaj   +1 more source

On Solvability in the Class of Distributions of Degenerate Integro-Differential Equations in Banach Spaces

Известия Иркутского государственного университета: Серия "Математика", 2020
The paper considers a new approach to constructing generalized solutions of degenerate integro-differential equations convolution type in Banach spaces.
M.V. Falaleev
doaj   +1 more source

THE TWO-SIDED ESTIMATES OF THE FREDHOLM RADIUS AND COMPACTNESS CONDITIONS FOR THE OPERATOR ASSOCIATED WITH A SECOND-ORDER DIFFERENTIAL EQUATION

Вестник КазНУ. Серия математика, механика, информатика, 2021
In this paper we consider the properties of the resolvent of a linear operator corresponding to a degenerate singular second-order differential equation with variable coefficients, considered in the Lebesgue space.
K. N. Ospanov, A. N. Yesbayev
doaj   +1 more source

Fredholm determinants, Anosov maps and Ruelle resonances [PDF]

, 2005
I show that the dynamical determinant, associated to an Anosov diffeomorphism, is the Fredholm determinant of the corresponding Ruelle-Perron-Frobenius transfer operator acting on appropriate Banach spaces.
Liverani, Carlangelo
core   +2 more sources

Fredholm operators on C*-algebras [PDF]

Acta Scientiarum Mathematicarum, 2017
The aim of this note is to generalize the notion of Fredholm operator to an arbitrary $C^*$-algebra. Namely, we define "finite type" elements in an axiomatic way, and also we define Fredholm type element $a$ as such element of a given $C^*$-algebra for which there are finite type elements $p$ and $q$ such that $(1-q)a(1-p)$ is "invertible".
Kečkić, Dragoljub J., Lazović, Zlatko
openaire   +2 more sources