1968/20/2

On a case of mixed inequalities between solutions of first order partial differential equations

Several theorems about uniform convergence of the Fourier series

Les propriétés des solutions non négatives de l'équation linéaire normale parabolique

Les fonctions univalentes, p-symétriques et bornées dans le cercle unité

Über ein geometrisches lineares Objeckt des Typus [3, 2, 1]

On certain functional equations for quasiconformal mappings

A difference method for a non-linear parabolic differential equation without mixed derivatives

On difference inequalities corresponding to partial differential inequalities of the first order

A discrete boundary value problem

Remark on a mean ergodic theorem

On the convergence of iterates

Über eine axiomatische Auszeichnung der Determinanten