The paper deals with 2-parameter families of planar vector fields which are invariant under the group for q ≥ 3. The germs at z = 0 of such families are studied and versal families are found. We also give the phase portraits of the versal families.
@article{bwmeta1.element.bwnjournal-article-apmv62z3p265bwm,
author = {Grzegorz \'Swirszcz},
title = {Versal deformations of $D\_q$-invariant 2-parameter families of planar vector fields},
journal = {Annales Polonici Mathematici},
volume = {62},
year = {1995},
pages = {265-281},
zbl = {0836.34031},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv62z3p265bwm}
}
Grzegorz Świrszcz. Versal deformations of $D_q$-invariant 2-parameter families of planar vector fields. Annales Polonici Mathematici, Tome 62 (1995) pp. 265-281. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv62z3p265bwm/
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