|Babel user information|
|Users by language|
This is a Wikimedia Commons user page. If you find this page on any site other than Wikimedia Commons, you are viewing a mirror site. Be aware that the page may be outdated, and that the user this page belongs to may have no personal affiliation with any site other than Wikimedia Commons itself. The original page is located at.
I was born in Amsterdam in 1950 and have been living in Switzerland since 1955; actually I am living in Flurlingen near Schaffhausen. I have three children born from 1986 to 1990. I have studied mathematics and computer science at the Swiss Federal Institute of Technology (ETH) in Zürich and have worked as a professor of maths and c.sc. educating engineers in Winterthur from 1991 to 2016.
Some of my contributions so far: (see also my user category)
Unterfeuer einer Deckpeilung zur Einfahrt nach Olhão
Aqueduto das Águas Livres, Interior
Aqueduto das Águas Livres, Tafel
Fernando Pessoa Monument,
Café A Brasileira
Padrão dos Descobrimentos, Windrose
Padrão dos Descobrimentos, Dekorative Pflästerung auf der Westseite
Olsztyn, Hohes Tor,
von der Altstadt her
Saurer Alpenwagen IIIa 1953 von www.olditour.ch