Geodesic
Oscillation of Elliptic Equations in General Domains
Canadian journal of mathematics, Tome 27 (1975) no. 6, pp. 1239-1245

Voir la notice de l'article provenant de la source Cambridge University Press

Oscillation criteria will be obtained for the linear elliptic partial differential equation in an unbounded domain G of general type in n-dimensional Euclidean space En. The differential operator D is defined as usual by where each α (i), i = 1, ... , n, is a non-negative integer. 
Noussair, E. S. Oscillation of Elliptic Equations in General Domains. Canadian journal of mathematics, Tome 27 (1975) no. 6, pp. 1239-1245. doi: 10.4153/CJM-1975-129-1
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