On décrit le début du spectre des longueurs des groupes de triangles ayant un angle droit et on montre que le spectre des longueurs caractérise la classe d’isométrie d’un tel groupe.
We describe the beginning of the length spectrum of fuchsian triangles groups and we show that the length spectrum gives a geometric characterization of such a group.
@article{AIF_2008__58_7_2659_0, author = {Philippe, Emmanuel}, title = {Les groupes de triangles $(2,p,q)$ sont d\'etermin\'es par leur spectre des longueurs}, journal = {Annales de l'Institut Fourier}, volume = {58}, year = {2008}, pages = {2659-2693}, doi = {10.5802/aif.2424}, zbl = {pre05505493}, mrnumber = {2498361}, language = {fr}, url = {http://dml.mathdoc.fr/item/AIF_2008__58_7_2659_0} }
Philippe, Emmanuel. Les groupes de triangles $(2,p,q)$ sont déterminés par leur spectre des longueurs. Annales de l'Institut Fourier, Tome 58 (2008) pp. 2659-2693. doi : 10.5802/aif.2424. http://gdmltest.u-ga.fr/item/AIF_2008__58_7_2659_0/
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