Il est connu en géométrie différentielle que l'on peut reconstruire une courbe à partir de ses n−1 fonctions de courbure, si l'on peut dériver ces fonctions suffisamment de fois dans le sens classique et si les premières n−2 fonctions sont strictement positives. On montre ici que ce résultat reste vrai sous l'hypothèse que les fonctions de courbure appartiennent à des espaces de Sobolev, en utilisant la notion de dérivée au sens des distributions. On montre aussi que l'application qui associe à ces fonctions de courbure la courbe ainsi construite est de classe .
It is known from differential geometry that one can reconstruct a curve with n−1 prescribed curvature functions, if these functions can be differentiated a certain number of times in the usual sense and if the first n−2 functions are strictly positive. We establish here that this result still holds under the assumption that the curvature functions belong to some Sobolev spaces, by using the notion of derivative in the distributional sense. We also show that the mapping that associates with such prescribed curvature functions the reconstructed curve is of class .
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@article{CRMATH_2004__338_6_447_0, author = {Szopos, Marcela}, title = {On the recovery of a curve isometrically immersed in a {Euclidean} space}, journal = {Comptes Rendus. Math\'ematique}, pages = {447--452}, publisher = {Elsevier}, volume = {338}, number = {6}, year = {2004}, doi = {10.1016/j.crma.2004.01.018}, language = {en}, url = {http://www.numdam.org/articles/10.1016/j.crma.2004.01.018/} }
TY - JOUR AU - Szopos, Marcela TI - On the recovery of a curve isometrically immersed in a Euclidean space JO - Comptes Rendus. Mathématique PY - 2004 SP - 447 EP - 452 VL - 338 IS - 6 PB - Elsevier UR - http://www.numdam.org/articles/10.1016/j.crma.2004.01.018/ DO - 10.1016/j.crma.2004.01.018 LA - en ID - CRMATH_2004__338_6_447_0 ER -
%0 Journal Article %A Szopos, Marcela %T On the recovery of a curve isometrically immersed in a Euclidean space %J Comptes Rendus. Mathématique %D 2004 %P 447-452 %V 338 %N 6 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2004.01.018/ %R 10.1016/j.crma.2004.01.018 %G en %F CRMATH_2004__338_6_447_0
Szopos, Marcela. On the recovery of a curve isometrically immersed in a Euclidean space. Comptes Rendus. Mathématique, Tome 338 (2004) no. 6, pp. 447-452. doi : 10.1016/j.crma.2004.01.018. http://www.numdam.org/articles/10.1016/j.crma.2004.01.018/
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