## Spectral approximation of positive operators by iteration subspace method.(English)Zbl 0562.65036

Author’s summary: The iteration subspace method for approximating a few points of the spectrum of a positive linear bounded operator is studied. The behaviour of eigenvalues and eigenvectors of the operators $$A_ n$$ arising by this method and their dependence on the initial subspace are described. An application of the Schmidt orthogonalization process for the approximate computation of the eigenelements of the operators $$A_ n$$ is also considered.
Reviewer: J.Albrycht

### MSC:

 65J10 Numerical solutions to equations with linear operators 47A10 Spectrum, resolvent
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### References:

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