An Approximation Method in the Variational Theory of the Spectrum of Operator Pencils
- Cite this article as:
- Hasanov, M. Acta Applicandae Mathematicae (2002) 71: 117. doi:10.1023/A:1014545418177
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An approximation method, based on a theorem on approximating general operator-valued functions by piecewise-linear ones, is presented and analyzed. Using this method, variational characteristics of the spectrum of a class of operator functions are established.