Grandpa, hanging around in the OEIS helping people to get their stuff in.

Love the history of mathematics, computational mathematics, and reverse engineering. Sometimes translate papers by Euler and Riemann.

I entertain myself with hacking and learning new computer languages.

I wish that TeX and CAS merge into one unity, eliminating any 'formula translating system'.

The image in the header is a photograph of some graffiti art that was once on the Berlin Wall.
(See Wikipedia: Berlin Wall.)