A.S. Galbraith has communicated to us the following intriguing problem: does the completeness of a manifold imply, or is it implied by, the emptiness of the class of bounded nonharmonic biharmonic functions? Among all manifolds considered thus far in biharmonic classification theory (cf. Bibliography), those that are complete fail to carry -functions, and one might suspect that this is always the case. We shall show, however, that there do exist complete manifolds of any dimension that carry -functions. Moreover, there exist both complete and incomplete manifolds not permitting these functions, and, trivially, incomplete manifolds possessing them.
A.S. Galbraith nous a communiqué la question suivante : est-ce que la complétion d’une variété implique, ou est impliquée par, la propriété que la classe des fonctions bornées non harmoniques biharmoniques soit vide ? Parmi toutes les variétés considérées jusqu’ici dans la classification biharmonique, celles qui sont complètes ne portent pas de -fonctions et on peut suspecter qu’il en est toujours ainsi. Nous allons montrer cependant qu’il existe bien des variétés complètes de toute dimension qui portent des -fonctions. De plus, il existe des variétés complètes et des variétés incomplètes qui n’en portent pas et, de façon évidente, des variétés incomplètes qui en portent.
@article{AIF_1974__24_1_311_0, author = {Sario, Leo}, title = {Completeness and existence of bounded biharmonic functions on a riemannian manifold}, journal = {Annales de l'Institut Fourier}, pages = {311--317}, publisher = {Institut Fourier}, address = {Grenoble}, volume = {24}, number = {1}, year = {1974}, doi = {10.5802/aif.502}, mrnumber = {353203}, zbl = {0273.31010}, language = {en}, url = {https://aif.centre-mersenne.org/articles/10.5802/aif.502/} }
TY - JOUR AU - Sario, Leo TI - Completeness and existence of bounded biharmonic functions on a riemannian manifold JO - Annales de l'Institut Fourier PY - 1974 SP - 311 EP - 317 VL - 24 IS - 1 PB - Institut Fourier PP - Grenoble UR - https://aif.centre-mersenne.org/articles/10.5802/aif.502/ DO - 10.5802/aif.502 LA - en ID - AIF_1974__24_1_311_0 ER -
%0 Journal Article %A Sario, Leo %T Completeness and existence of bounded biharmonic functions on a riemannian manifold %J Annales de l'Institut Fourier %D 1974 %P 311-317 %V 24 %N 1 %I Institut Fourier %C Grenoble %U https://aif.centre-mersenne.org/articles/10.5802/aif.502/ %R 10.5802/aif.502 %G en %F AIF_1974__24_1_311_0
Sario, Leo. Completeness and existence of bounded biharmonic functions on a riemannian manifold. Annales de l'Institut Fourier, Volume 24 (1974) no. 1, pp. 311-317. doi : 10.5802/aif.502. https://aif.centre-mersenne.org/articles/10.5802/aif.502/
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