Affine invariant conditions for the topological distinction of quadratic systems with a critical point of the 4th multiplicity

Autores: Mark Voldman, Iu. T. Calin, N. I. Vulpe
Localización: Publicacions matematiques, ISSN 0214-1493, Vol. 40, Nº 2, 1996, págs. 431-441
Idioma: inglés
DOI: 10.5565/publmat_40296_13
Títulos paralelos:
- Condiciones invariantes afines para la caracterización topológica de sistemas cuadráticos con un punto crítico de multiplicidad cuatro
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Resumen
- The affine invariant partition of the set of quadratic systems with one finite singular point of the 4th multiplicity with respect to different topological classes is accomplished. The conditions corresponding to this partition are semi-algebraic, i.e. they are expressed as equalities or inequalities between polynomials.