| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient technique for determining the position of the zero point of a complex interval polynomial regardless of the size of the number of partition boundaries C<SB>k</SB>. SOLUTION: If a polynomial having no zero point in an area D exists in a complex interval polynomial F(x), one point c (representative point c) on the boundary C of the area D is selected and a check is made as to whether or not a polynomial whose zero point is the representative point c exists in the complex interval polynomial F(x) (step S4). If a determination is made that no polynomial whose zero point is the representative point c exists, a determination is made as to whether or not a complex meeting a predetermined equation exists on each interval boundary (step S55), and the determination result is output as information indicating whether or not the complex interval polynomial has a zero point. COPYRIGHT: (C)2009,JPO&INPIT
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