- six-colour torus
- мат. окрашенный в шесть цветов тор
Большой англо-русский и русско-английский словарь. 2001.
Большой англо-русский и русско-английский словарь. 2001.
Four color theorem — Example of a four colored map A four colori … Wikipedia
Human Race — Human Race † Catholic Encyclopedia ► Human Race Mankind exhibits differences which have been variously interpreted. Some consider them so great that they regard the varieties of the human race as distinct species; others maintain the… … Catholic encyclopedia
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
Art and Art Exhibitions — ▪ 2009 Introduction Art The art market enjoyed an astonishing run of record breaking sales through the first nine months of a volatile 2008. In May Lucian Freud s Benefits Supervisor Sleeping (1995), a candid portrayal of a corpulent female … Universalium
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast … Universalium
n-dimensional sequential move puzzle — Five dimensional 25 puzzle partial cutaway demonstrating that even with the minimum size in 5 D the puzzle is far from trivial. The 4 D nature of the stickers is clearly visible in this screen shot. The Rubik s cube is the original and best known … Wikipedia
number game — Introduction any of various puzzles and games that involve aspects of mathematics. Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… … Universalium
List of QI episodes (B series) — infobox tvseason season name = QI Series B caption = The front cover of the QI series B DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 17 March, 2008 country = UK network = BBC first aired = 8 October, 2004 last… … Wikipedia
Satz von Ringel-Youngs — Die Satz von Ringel Youngs, auch Heawood Vermutung genannt, gibt in der Graphentheorie eine obere Schranke für die Anzahl der Farben, die für die Färbung einer Fläche eines Geschlechts hinreichend ist. 1968 wurde von Gerhard Ringel und J. W. T.… … Deutsch Wikipedia
Heawood conjecture — The Heawood conjecture or Ringel–Youngs theorem in graph theory gives an upper bound for the number of colors which are sufficient for graph coloring on a surface of a given genus. It was proven in 1968 by Gerhard Ringel and J. W. T. Youngs. One… … Wikipedia