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pierredv : topology   5

Matrix villain spawns 177,000 ways to knot a tie - physics-math - 07 February 2014 - New Scientist
"In 1999, Thomas Fink and Yong Mao of the University of Cambridge published a mathematical language describing tie knots in the journal Nature. The pair used an existing tool from logic – known as formal language theory – to express the basic rules of tying a neck tie as a series of symbols. This included things like the placement of the tie, the direction of the fold and the need to end in a final tuck. They used their tie language to show that only 85 knots were possible. Now mathematician Mikael Vejdemo-Johansson of the KTH Royal Institute of Technology in Stockholm, Sweden, has vastly broadened the tie landscape."
maths  topology  video  tie  NewScientist 
april 2014 by pierredv
IXPs: the key to sustaining and expanding a healthy global Internet ecosystem - Insight - News | Analysys Mason
" Internet market players began to create more interconnection facilities across a range of countries and regions, in the form of Internet exchange points (IXPs)."
internet  architecture  topology  IXP  traffic  AnalysysMason 
february 2011 by pierredv

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