Geodesic
On the nodal line of the second eigenfunction of elliptic operators in two dimensions.
Journal für die reine und angewandte Mathematik, Tome 396 (1989), pp. 1-13 Cet article a éte moissonné depuis la source European Digital Mathematics Library

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Mots-clés : Geometric properties, eigenfunctions, nodal points, invariant, nodal line, second eigenfunction 
@article{JRAM_1989__396_153122,
     author = {Bernhard Ruf and Th. Kappeler},
     title = {On the nodal line of the second eigenfunction of elliptic operators in two dimensions.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--13},
     year = {1989},
     volume = {396},
     zbl = {0658.35068},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1989__396_153122/}
}
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%A Th. Kappeler
%T On the nodal line of the second eigenfunction of elliptic operators in two dimensions.
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%D 1989
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%U http://geodesic.mathdoc.fr/item/JRAM_1989__396_153122/
%F JRAM_1989__396_153122
Bernhard Ruf; Th. Kappeler. On the nodal line of the second eigenfunction of elliptic operators in two dimensions.. Journal für die reine und angewandte Mathematik, Tome 396 (1989), pp. 1-13. http://geodesic.mathdoc.fr/item/JRAM_1989__396_153122/