Xah Code

Download entire xahlee.info for offline reading. ≈3.4 thousand HTML pages. I'll email you within 24 hours.

Math & Programing, tutorials & essays. There are 3.4 thousand articles. Use the search box on top to find what you are looking for. For latest articles, subscribe: ProgramingWeb DevEmacsMath.

by popular request, my bitcoin 19dfoa3Q7oehm9MwCULQzBG8vqfCaeMazH . Thank you for donation.

Siphon my knowledge into your brain; assimilate my sensibilities to your spine.

Math

Math reference works and essays. Full index at Xah Math. The following are popular topics.

curve icon

Visual Dictionary of Special Plane Curves

surface icon

Surface Gallery

wall paper icon

Wallpaper Groups

tiling icon

Math Graphics Gallery

much more at Xah Math

Programing

Tutorials, Critiques, Commentaries on aspects of the computing industry, technical & social. Index at Computing & its People.

JavaScript Tutorial

visual css

Visual Dictionary of CSS

penguin

Linux Tutorial

perl camel python snake

Perl & Python Tutorial

∑ ∞ π © ™ § ☺ ♀ ♂ ♥ 😸 👸 👽

Unicode Search

Logitech wireless solar keyboard k750

All You Ever Need to Know About Keyboards ⌨

on Programing Languages

emacs logo

Emacs

LISP logo

Emacs Lisp

much more at Computing and Its People