Über gewisse partielle Differentialgleichungen im Bereich der Distributionen.
Universal zero solutions of linear partial differential operators
A generalized approach to several universality results is given by replacing holomorphic or harmonic functions by zero solutions of arbitrary linear partial differential operators. Instead of the approximation theorems of Runge and others, we use an approximation theorem of Hörmander.
Utilisation des distributions pour l'étude des équations aux dérivées partielles en dimension infinie