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Convergence of Hill's method for nonselfadjoint operators
Hill’s method periodic-coefficient operators Floquet-Bloch decomposition
2010/12/9
By the introduction of a generalized Evans function defined by an appropriate 2-modified Fredholm determinant, we give a simple proof of convergence in location and multiplicity of Hill’s method for n...
On the Approximation of Contractive Semigroups of Operators in Discretizable Hilbert Spaces
Contractive Semigroups Evolution Equations Discretizable Hilbert Space
2011/2/25
The Computation of discrete Contractive semigroups becomes necessary when we deal with several types of evolution equations in Discretiz-able Hilbert spaces, in this work we study some properties of t...