| Texto completo | |
| Autor(es): |
Nabarro, Ana Claudia
;
Tani, Farid
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS; v. 141, p. 18-pg., 2011-01-01. |
| Resumo | |
We define and study families of conjugate and reflected curve congruences associated to a self-eel joint operator A on a smooth and oriented surface M endowed with a Lorentzian metric g. These families trace parts of the pencil joining the equations of the A-asymptotic and the A-principal curves, and the pencil joining the A-characteristic and the A-principal curves, respectively. The binary differential equations (BDEs) of these curves can be viewed as points in the projective plane. Using the polar lines of various BDEs with respect to the conic of degenerate quadratic forms, we obtain geometric results on the above pencils and their relation with the metric g, on the type of solutions of a given BDE, of its A-conjugate equation and on BDEs with orthogonal roots. (AU) | |
| Processo FAPESP: | 08/58190-1 - Richard van Noort | University of Sheffield - Inglaterra |
| Beneficiário: | Marco Antonio Bottino |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Internacional |