Geodesic
Time-like isothermic surfaces associated to Grassmannian systems
Documenta mathematica, Tome 10 (2005), pp. 527-549.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: We establish that, as is the case with space-like isothermic surfaces, time-like isothermic surfaces in pseudo-riemannian space $\mathbb R^{n-j,j}$ are associated to the $O(n-j+1,j+1)/O(n-j,j)\times O(1,1)$-system.
Classification : 53A35, 53C40
Keywords: isothermic surfaces, integrable systems, Grassmannian systems 
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     author = {Dussan, M.P. and Magid, M.A.},
     title = {Time-like isothermic surfaces associated to {Grassmannian} systems},
     journal = {Documenta mathematica},
     pages = {527--549},
     publisher = {mathdoc},
     volume = {10},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a3/}
}
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Dussan, M.P.; Magid, M.A. Time-like isothermic surfaces associated to Grassmannian systems. Documenta mathematica, Tome 10 (2005), pp. 527-549. http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a3/