 07108 Roman Werpachowski
 On the approximation of real powers of sparse, infinite, bounded and Hermitian matrices
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Apr 30, 07

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Abstract. We describe a method to approximate the matrix elements of a real power $\alpha$ of a positive (for $\alpha \in \mathbb{R}$) or nonnegative (for $\alpha \ge 0$), infinite, bounded, sparse and Hermitian matrix $W$. The approximation uses only a finite part of the matrix $W$.
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