1980/38/1

The u-invariant of fields with 16 and 32 square classes I

Grothendieck and Witt groups in the reduced theory of quadratic forms

On the Chaplygin method for partial differential-functional equations of the first order

A new characterization of the sphere in ${\displaystyle R^3}$

Une remarque sur le théorème de Jürgen Witte sur l'unicité de la solution de l'équation differentielle y' = f(x, y)

Some univalent compositions of polynomials with univalent functions

On an ODE problem for equisingularities

On Ruscheweyh derivatives

Regular fractional iteration of convex functions