.Some information, if you really want to know.
Retired Mathematics Teacher and Computer Scientist.
Sailing in a Dutch Traditional 'Vollenhovense Bol 8.50 m'.
Programming in Python and Sage.
Sage is a free open-source mathematics software system.
Solving Mathematical Problems
OEIS, The On-Line Encyclopedia of Integer Sequences.
Many more
My visit to Saint
Petersburg (Dutch) .
Sage Days 6 in Bristol. See my pictures.
Sage Days 10 in Nancy. Some photos.
See my bookmarks (actually almost my bookmarks from my Mozilla browser at home).
