1980/38/2

Asymptotic behavior of non-linear differential equations via non-standard analysis. Part III. Boundedness and monotone behavior of the equation (a(t)φ(x)x')' + c(t)f(x) = q(t)

Asymptotic analyses of two fourth order linear differential equations

On the tangency of sets in metric spaces

On the least principal fundamental solution of a parabolic differential equation

Certain subclasses of the class of typically real functions

Approximate determination of eigenvalues and eigenvectors of selfadjoint operators

On Hermite expansion of ${\displaystyle x^p\_+}$

On a theorem of inversive geometry

An example of a continuous function without the usual, the approximative and the distributional derivative

A generalization of the Malgrange-Zerner theorem

On infinite systems of Volterra integral equations in Banach spaces

Dependence of a differential equation on the first eigenvalue of a suitable problem

Description of a class of multivalued differential equations with almost weakly stable trivial solution

Radial limits of the Poisson kernel on the classical Cartan domains