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51.
G. F. Korsakov 《Mathematical Notes》1975,18(1):597-599
A new criterion (in terms of determinant inequalities) is obtained for all the roots of a real polynomial to lie inside the unit circle, i.e., a criterion of stability of periodic motions. In contrast to the Schur-Cohn criterion, the number of determinants used by us is by four times smaller. 相似文献