Recensie van: Jan Frans Willems. Vader van de Vlaamse Beweging / Ludo Stynen

Jan van Mill

De Groot proved that every group is the autohomeomorphism group of some metrizable space. A space is totally disconnected if every connected subset of it contains at most one point. We prove that every separable metrizable totally disconnected topological group is topologically isomorphic to the autohomeomorphism group of some separable metrizable space, when given the compact-open topology. It...

Arno Van Den Essen , Roel Willems And

In this paper we prove four cases of the vanishing conjecture of differential operators with constant coefficients and also a conjecture on the Laurent polynomials with no holomorphic parts, which were proposed in [Zh3] by the third named author. We also give two examples to show that the generalizations of both the vanishing conjecture and the Duistermaat-van der Kallen theorem [DK] to Laurent...

Jan A . van Gils Matthijs van der Geest Jutta Leyrer

Obituary for Jan Valentyn van der Merwe

Professor Jan Valentyn Van der Merwe passed away on Friday, 25 September, at the age of 71. Prof Jan’s illustrious career began after he completed a research fellowship at Duke University in the USA, and returned to South Africa as Head of the Department of Obstetrics and Gynaecology at Pretoria University. In this role, Prof Jan pioneered the establishment of an assisted reproduction unit in S...

Van de Graaff Generator

In this work it was developed a Van de Graaff generator that we design and built and that is intended to be used in secondary schools for teaching basic principles of electrostatics, electromagnetic as well as a number of other applications. Today many schools laboratories and museums use this kind of generator for electrostatic demonstrations. Electrostatics was first noticed by the Greek phil...