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A question on tex.stackexchange got me to play around with TikZ a little bit, which resulted in the following picture:

goboard

On the way, I produced some commands for quickly drawing similar pictures (note that there is already a LaTeX package for drawing black-and-white diagrams):

usepackage{tikz,amsfonts}
usetikzlibrary{calc,shadows}

% The basic environment that draws the board
newenvironment{partialgoboard}[2]{%
 begin{tikzpicture}[
 scale=0.5,
 stone/.style={drop shadow={shadow xshift=0.03, shadow yshift=-0.05}},
 black-stone/.style={black!80},
 black-highlight/.style={outer color=black!80, inner color=black!30},
 black-number/.style={white},
 white-stone/.style={white!70!black},
 white-highlight/.style={outer color=white!70!black, inner color=white},
 white-number/.style={black},
 gomark/.style={black,fill=brown!80}]
 clip (#1) rectangle (#2);
 fill[brown!80] (0,0) rectangle (20,20);
 draw[black] (1,1) grid (19,19);
 draw[thick,black] (1,1) rectangle (19,19);
 fill (4,4) circle (0.1);
 fill (4,10) circle (0.1);
 fill (4,16) circle (0.1);
 fill (10,4) circle (0.1);
 fill (10,10) circle (0.1);
 fill (10,16) circle (0.1);
 fill (16,4) circle (0.1);
 fill (16,10) circle (0.1);
 fill (16,16) circle (0.1);
 }{%
 end{tikzpicture}
 }

% A shortcut for drawing a full board
newenvironment{goboard}{begin{partialgoboard}{0,0}{20,20}}{end{partialgoboard}}

% A stone
newcommandgostone[4][]{%
 begin{scope}
 fill[stone,#2-stone] (#3,#4) circle (0.45);
 clip (#3,#4) circle (0.45);
 shade[#2-highlight] (-0.15+#3,0.5+#4) circle (0.7);
 end{scope}
 node[#2-number] at (#3,#4) {sffamilybfseries{#1}};
}

% Some markers
newcommandgotrig{(mathbftriangle)}
newcommandgobox{(mathbfBox)}
newcommandgodia{(mathbfDiamond)}

% Marking a position on the board
newcommandgomark[3]{%
 node[gomark] at (#2,#3) {sffamilybfseries{#1}};
}

The above example is then produced with:

begin{partialgoboard}{0,0}{10.5,10.5}
 gostone{white}{4}{9}
 gostone{white}{3}{4}
 gostone[gotrig]{white}{5}{3}
 gostone{white}{10}{4}
 gostone[1]{white}{2}{6}
 gostone[3]{white}{3}{3}
 gostone[5]{white}{4}{5}
 gostone[7]{white}{2}{3}
 gostone{black}{2}{4}
 gostone{black}{3}{5}
 gostone[2]{black}{4}{4}
 gostone[4]{black}{4}{3}
 gostone[6]{black}{3}{2}
 gostone[8]{black}{5}{4}
 gomark{A}{5}{5}
 gomark{B}{2}{2}
end{partialgoboard}

Geschafft!

Ich bin durch Ulysses durch. Und das größtenteils auf Englisch! :)

Direkt vor der TU Wien:

(die Markierung wurde mit Klebeband gemacht)

Der Hauptverdächtige ist nur leider momentan außer Landes. Aber wer macht sich sonst so einen Parkplatz vor der TU?

Avast!

I have to resists… Arrr… It’s useless… I give in…

And me favorite booty be here.

Nach einigen Problemen hab ich jetzt mit ca. einem Monat Verspätung endlich ein neues Handy. Ich hab E-Mail mit der Nummer verschickt, wenn ich aber jemanden vergessen haben sollte: Auf dieser Seite die alte Nummer angeben, dann bekommst Du die neue: /contact.php.

You’d think I have already learned my lessons. But no! Some time ago I switch from storing all contact information directly in the evolution adress book (which was periodically backed up to my server) to a storing it in an LDAP Server (OpenLdap) on said server so that I could use it from every computer and OS that has access to the internet. With a RAID mirror in palce, I thought that that backing up the LDAP store was not really necessary – if one of the disks failed I would still have the other one with my data on it.

Now some days ago a valve in the water heater in our house failed an produced a short circut. No big deal in the end – it was fixed the next day and everything is working fine again (except the heating, but currently I’d rather need air contitioning). Of course the fuse switch off power supply, so the server crashed. And today I wanted to write an email and found that only nine contacts were left in the database. The whole rest was gone! So much for using RAID. It wont protect you from software failures!

Luckily google rescued me. And it even worked after the LDAP server had already run for several days. Probably because I did not change any data.

Incidents like this, show how dependent I have become of computers. Some time ago I would have kept a hand-written note book with that information.

Danke!

Noch einmal vielen Dank für das Geburtstagsgeschenk. Das Konzert war großartig!

Yesterday I finally saw Koyaanisqatsi. Having had the soundtrack for quite some time now and having already seen the sequel Powaqqatsi some years ago I did have very high expactations for the film. And it did absolutely fullfill them.

If you do not know Koyaanisqatsi (or its sequels), I highly recommend them. They are very unusual films having no dialogs or even actors at all. Just powerful imagery and music (composed by Philip Glass). "Koyaanisqatsi" is a Hopi word meaning something like "life out of balance" and the film portraits this (our current) life. On the one hand it is about technological achievements, on the other hand it is about the monstrosity of our use of technology. It describes the "beauty of the biest", as Godfrey Reggio, the director of the film, puts it. But even without thinking about deeper meanings Koyannisqatsi is a highly artistic work on one of the best uses of the medium I have seen. The removal of all "foreground" activity from normal movies (i.e. the plot and audible language) and the extensive usage of slow motion and time lapse create a whole new view on life — to explore it is then up to the viewer.

While I always thought that mathematics is a kind of art, and that the creative act of creating art (especially composing music) is very akin to doing (real) maths, I did never link maths and dancing… But here you are:


Dance. You should be a Dance major! Like a lithe ballerina, you dance because you believe there is beauty in expressing the physical form.

Mathematics
83%
Dance
83%
English
75%
Engineering
75%
Sociology
67%
Psychology
58%
Philosophy
58%
Chemistry
50%
Theater
50%
Linguistics
50%
Anthropology
42%
Biology
42%
Journalism
33%
Art
33%

What is your Perfect Major?
created with QuizFarm.com


The “tie breaker” question for me was to select the most true statement of “I always find ways to solve problems.” and “I am passionate about aesthetics, forms, and movements.” The auther of that quiz (which one shouldn’t take to serious) probably though that the first is more linked to maths, while I think that maths is all about form and aesthetics.

From today on, The Economist’s "Global Agenda" online articles are only available for subscribers of the print or web edition of the magazin. If they think this move will get them more subscribers, I very much doubt it. Maybe some readers of the Global Agenda will now subscribe (I will not), but on the long run they lose one of their best advertisments.

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