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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.
