User:Pt

I am interested in physics (mostly theoretical, but not exclusively), mathematics and also in other science subjects. I used to take part in many olympiads every year. In 2004 I reached the international level by getting a bronze medal on the International Physics Olympiad in Pohang, South Korea. In 2005 I got another one from Salamanca, Spain. Now I'm specializing to particle physics and cosmology.

My other interests include:

• Rubik's cube and Pyraminx
• Cycling (just for my own pleasure, no competitions)
• Orienteering
• Karate (Shotokan style in particular, I have an orange belt or 7 kyu)
• Juggling with 3 balls
• Classical music
• Music theory, in particular classical harmony
• Singing in a chamber choir
• Western concert flute (studied for 8 years)
• Piano (5 years of studies and endless improvizations thereafter)
• Harmonica
• And of course computer (since early 1990s):
• Linux operating system, Gentoo Linux in particular
• Bash shell scripting
• C++ programming language
• LaTeX document formatting system
• GNU Lilypond music typesetting program
• Functional programming, in particular Haskell
• Maxima and Mathematica computer algebra programs
• … and naturally Wikipedia!

I have been using Wikipedia since 2004, choosing the username for a personal reason. [http://en.wikipedia.org/w/index.php?title=Wikipedia:Votes_for_deletion/Nature_Club&diff=prev&oldid=9568167 This edit] on 23 January 2005 was my thousandth. Usually, when I've not dived into the endless information labyrinth, I reside at the mathematics and science reference desks. Browsing the article space, I tend to immediately correct any small mistake I meet, especially regarding TeX and orthography. If I find anything I cannot fix, but seems to need attention, I tag it. Thus, my edits are mostly minor.

• [http://toolserver.org/~soxred93/count/index.php?name=Pt&lang=en&wiki=wikipedia Some general statistics] about my edits,
• [http://toolserver.org/~soxred93/pages/index.php?name=Pt&lang=en&wiki=wikipedia&namespace=0&redirects=noredirects created articles],
• [http://toolserver.org/~soxred93/pages/index.php?name=Pt&lang=en&wiki=wikipedia&namespace=0&redirects=onlyredirects created redirects],
• [http://toolserver.org/~soxred93/pages/index.php?name=Pt&lang=en&wiki=wikipedia&namespace=14&redirects=none created categories],
• [http://toolserver.org/~soxred93/pages/index.php?name=Pt&lang=commons&wiki=wikimedia&namespace=6&redirects=none uploaded images in Commons] (plus that one now moved there).

• A discussion at WP:RD/Math about the number of permutations with at least one 2-cycle
• Another one about $O(n\; \backslash log\; n)$ evaluation of a polynomial of degree $n$ and its $n$ derivatives at some point
• Solved this, this and this nonlinear 2nd-order differential equation
• Found a closed form expression for continued fraction [1;2,1,3,1,4,1,5,…]

{{user wikiet}}{{user Meta-Wiki}}{{user Wikicommons}}

Pt