Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange


If I've helped you, please consider supporting my mathy pursuits:

  • I'm the Trigonographer at, spotlighting my various "proofs without words" for trigonometric identities and relations.

  • I'm also the Hedronometer at, compiling information about the dimensionally-enhanced trigonometry of tetrahedra.

  • I'm the person behind Tricochet, creator of math-inspired iOS apps such as Trigger, piClock, and Solly. (I also do custom iOS design and development; see UI by Blue.)