Institutul de Matematică şi Informatică "Vladimir Andrunachievici"
Universitatea de Stat din MoldovaRO EN
Solution of the problem of the centre for cubic differential system with three invariant straight lines two of which are parallel.
Authors: Şubă Alexandru, Cozma D.
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Abstract
For cubic differential system with three invariant straight lines two of which are parallel it is proved that a singular point with purely imaginary eigenvalues (weak focus) is a centre if and only if the focal values vanish.
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Contents
- Spaces, mappings and compact subsets.
- Theory of simple and multiple antisymmetry - a survey.
- Global pullback attractors of ℜ-analytic cocycles.
- Solution of the problem of the centre for cubic differential system with three invariant straight lines two of which are parallel.
- One-dimensional model of gas combustion.
- Remainders of some spaces.
- On the semisimple classes of left hereditary radicals.
- On some bijections between ideals, classes of modules and preradicals of R-mod.
- Topologies on functional spaces.
- Loops transversals in Sb to Stab(Sn) and coordinatizations of projective planes.
