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pro vyhledávání: '"D. V. Cozma"'
Autor:
D. V. Cozma, A. I. Matei
Publikováno v:
Bukovinian Mathematical Journal. 8:6-13
We find conditions for a singular point O(0, 0) of a center or a focus type to be a center, in a cubic differential system with one irreducible invariant cubic. The presence of a center at O(0, 0) is proved by constructing integrating factors.