Results 161 to 170 of about 500,094 (203)
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On the eigenvalues of the fredholm operator
Ukrainian Mathematical Journal, 1996See the review in Zbl 0891.47034.
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Journal of Mathematical Sciences
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The Fredholm Determinant for a Dirac Operator
Annals of Physics, 1994The Fredholm determinant for a Dirac operator appropriate to a particle moving in one spatial dimension is investigated. The operator is written as \(H=p_ x\sigma_ 1+ m\sigma_ 3+ V(x)\), where \(p_ x\), \(m\) and \(V(x)\) are, respectively, the momentum, mass, and potential energy of the particle and the Pauli spin matrices, \(\sigma_ i\), constitute a
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Generalized Fredholm operators
Archiv der Mathematik, 1985The classical Fredholm theory in Banach spaces studies normally solvable operators with null space or conull space in F, the ideal of all finite dimensional Banach spaces. The aim of this paper is to study normally solvable operators with null space or conull space in an arbitrary space ideal A.
Alvarez, Teresa, Onieva, Victor M.
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On Fredholm Properties of Operator Products
Mathematical Proceedings of the Royal Irish Academy, 2003An operator \(A\) acting on a Banach space \(X\) is called generalised Fredholm operator if there exists an operator \(S\) on \(X\) such that \(ASA=A\) and \(I-SA-AS\) is a Fredholm operator. These operators have been studied by the author in several previous papers.
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Operator Estimates for Fredholm Modules
Canadian Journal of Mathematics, 2000AbstractWe study estimates of the typewhere φ(t) = t(1 + t2)−1/2, D0 = D0* is an unbounded linear operator affiliated with a semifinite von Neumann algebra , D − D0 is a bounded self-adjoint linear operator from and , where E(, τ) is a symmetric operator space associated with .
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Compact and Fredholm Operators
1993The operators in infinite dimensional spaces closest to operators in finite dimensional spaces are the compact operators, which will now be studied systematically. A large number of examples of compact operators are given in the exercises.
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2011
The theory of linear Fredholm operators will be used in this chapter to study onlinear elliptic problems. Nonlinear operators are called Fredholm operators if the corresponding linearized operators satisfy this property.
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The theory of linear Fredholm operators will be used in this chapter to study onlinear elliptic problems. Nonlinear operators are called Fredholm operators if the corresponding linearized operators satisfy this property.
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Spectral description of Fredholm operators via polynomially Riesz operators perturbation
Georgian Mathematical Journal, 2022Faiçal Abdmouleh, Inés Walha
exaly
2011
The theory of elliptic problems is essentially based on their Fredholm property which determines solvability conditions and a well-defined index. The Fredholm property and index are preserved under small perturbations of the operators. The situation is quite different if the Fredholm property is not satisfied. A general theory of such problems does not
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The theory of elliptic problems is essentially based on their Fredholm property which determines solvability conditions and a well-defined index. The Fredholm property and index are preserved under small perturbations of the operators. The situation is quite different if the Fredholm property is not satisfied. A general theory of such problems does not
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