Freelance IT architect - interests: TeX, Metapost, systems performance, statistics, geometry, IT architecture, scientific computing, data analysis for health care.
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Q&A for professional and enthusiast programmers
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for programming puzzle enthusiasts and code golfers
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for speakers of other languages learning English
Q&A for people studying math at any level and professionals in related fields
Q&A for computer enthusiasts and power users
Q&A for power users of Apple hardware and software
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for those involved in the field of teaching mathematics