Fonctions biharmoniques adjointes

Emmanuel P. Smyrnelis¹

¹ Department of Mathematics University of Athens Athens, Greece

Annales Polonici Mathematici, Tome 99 (2010) no. 1, pp. 1-21

Résumé

The study of the equation $(L_2L_1)^* h= 0$ or of the equivalent system $L_{2}^{\ast }h_{2}=-h_{1}$, $ L_{1}^{\ast }h_{1}=0$, where $L_{j}$ $(j=1,2)$ is a second order elliptic differential operator, leads us to the following general framework: Starting from a biharmonic space, for example the space of solutions $(u_{1},u_{2})$ of the system $L_{1}u_{1}=-u_{2}$, $ L_{2}u_{2}=0$, $L_{j}$ $(j=1,2)$ being elliptic or parabolic, and by means of its Green pairs, we construct the associated adjoint biharmonic space which is in duality with the initial one.

Détail

DOI : 10.4064/ap99-1-1

Mots-clés : study equation * equivalent system ast h ast where second order elliptic differential operator leads following general framework starting biharmonic space example space solutions system u being elliptic parabolic means its green pairs construct associated adjoint biharmonic space which duality initial