Dans ce travail on donne une classe des polynômes réels de degré n⩾3 à deux variables tels que les courbes paraboliques de leurs graphes contiennent au moins (n−1)(n−2)/2 composantes connexes difféomorphes au cercle et exactement n(n−2) points paraboliques spéciaux. Ces polynômes sont de la forme f=l1⋯ln où les li, i=1,…,n, sont des fonctions réelles affines génériques sur le plan.
In this Note we give a class of real polynomials of degree n⩾3 in two variables such that the parabolic curves of theirs graphs have at least (n−1)(n−2)/2 connected components diffeomorphic to the circle and exactly n(n−2) special parabolic points. These polynomials are of the form f=l1⋯ln where li, i=1,…,n, are generic real affine functions on the plane.
Accepté le :
Publié le :
@article{CRMATH_2002__334_6_473_0, author = {Ortiz-Rodr{\'\i}guez, Adriana}, title = {On the special parabolic points and the topology of the parabolic curve of certain smooth surfaces in $ \mathbb{R}^{3}$}, journal = {Comptes Rendus. Math\'ematique}, pages = {473--478}, publisher = {Elsevier}, volume = {334}, number = {6}, year = {2002}, doi = {10.1016/S1631-073X(02)02287-2}, language = {en}, url = {http://archive.numdam.org/articles/10.1016/S1631-073X(02)02287-2/} }
TY - JOUR AU - Ortiz-Rodríguez, Adriana TI - On the special parabolic points and the topology of the parabolic curve of certain smooth surfaces in $ \mathbb{R}^{3}$ JO - Comptes Rendus. Mathématique PY - 2002 SP - 473 EP - 478 VL - 334 IS - 6 PB - Elsevier UR - http://archive.numdam.org/articles/10.1016/S1631-073X(02)02287-2/ DO - 10.1016/S1631-073X(02)02287-2 LA - en ID - CRMATH_2002__334_6_473_0 ER -
%0 Journal Article %A Ortiz-Rodríguez, Adriana %T On the special parabolic points and the topology of the parabolic curve of certain smooth surfaces in $ \mathbb{R}^{3}$ %J Comptes Rendus. Mathématique %D 2002 %P 473-478 %V 334 %N 6 %I Elsevier %U http://archive.numdam.org/articles/10.1016/S1631-073X(02)02287-2/ %R 10.1016/S1631-073X(02)02287-2 %G en %F CRMATH_2002__334_6_473_0
Ortiz-Rodríguez, Adriana. On the special parabolic points and the topology of the parabolic curve of certain smooth surfaces in $ \mathbb{R}^{3}$. Comptes Rendus. Mathématique, Tome 334 (2002) no. 6, pp. 473-478. doi : 10.1016/S1631-073X(02)02287-2. http://archive.numdam.org/articles/10.1016/S1631-073X(02)02287-2/
[1] F. Aicardi, Communication personnelle, Août 2001
[2] V.I. Arnold, Communication personnelle, Avril 2001
[3] Differential Geometry of Curves and Surfaces, Prentice-Hall, Englewood Cliffs, NJ, 1976
[4] Über Vieltheiligkeit der ebenen algebraischen Curven, Math. Ann., Volume 10 (1876), pp. 189-199
[5] Tangential singularities, Funct. Anal. Appl., Volume 15 (1981), pp. 103-114
[6] Special points on surfaces in the three-dimensional projective space, Funct. Anal. Appl., Volume 34 (2000) no. 4, pp. 276-287
[7] Singularities of the mutual disposition of a surface and a line, Russian Math. Surveys, Volume 36 (1981) no. 1, pp. 248-249
[8] Projections des surfaces lisses, J. Soviet Math., Volume 10 (1984) no. 6, pp. 135-149
[9] Real Algebraic and Semi-Algebraic Sets, Actualités Math., Hermann, 1990
Cité par Sources :