On Nishi's Conditions for Ω-Property(Numerical Analysis and Optimization)
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概要
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The concept of an Q-matrix was introduced by Nishi in order to estimate the number of solutions of a resistive circuit containing active elements. He gave a finite characterization by means of four conditions which are all satisfied if and only if the matrix under investigation is anΩ-matrix. In this note we show that none of the four conditions can be omitted.
- 社団法人電子情報通信学会の論文
- 2003-09-01