Some information, if you really want to know.
Retired Mathematics Teacher/College Lecturer and Computer Scientist.
Sailing in a Dutch Traditional 'Vollenhovense Bol 8.50 m'.
Unix/Linux. Open Source.
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. Search for Jaap Spies
My visit to Saint Petersburg (Dutch)
Sage Days 6 in Bristol. See my pictures Day 1, Day 2, Day 3, Day 4, Day 5, Day 6 (extra),
Sailing at the 5ECM.
Sage Days 10 in Nancy. Some photos.
Sage Days 23 in Leiden. Official website Lorentz Center.
Spies Sage Development Prize
See my bookmarks