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| Ultima descărcare din IBN: 2023-09-23 11:27 |
 SM ISO690:2012COZMA, Dumitru. Center problem for a class of cubic systems with a bundle of two invariant straight lines and one invariant conic. In: Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, 2010, nr. 3(64), pp. 51-66. ISSN 1024-7696. |
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| Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica | ||||||
| Numărul 3(64) / 2010 / ISSN 1024-7696 /ISSNe 2587-4322 | ||||||
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| Pag. 51-66 | ||||||
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| Rezumat | ||||||
For a class of cubic differential systems with a bundle of two invariant
straight lines and one invariant conic it is proved that a weak focus is a center if and
only if the first four Liapunov quantities Lj , j = 1, 4 vanish. |
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| Cuvinte-cheie Cubic differential system, Center-focus problem, integrability, invariant algebraic curve |
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