Archive for the ‘Conversations’ Category
a hole in the middle
In Conversations on November 25, 2010 at 10:33 am
Topology problems
In 6 Degrees Of Separation, Conversations, science on August 22, 2010 at 9:10 am
The Seven Bridges of Königsberg is a notable historical problem in mathematics. Its negative resolution by Leonhard Euler in 1735 laid the foundations of graph theory and presaged the idea of topology.
an holiday in Portugal (part 2)
In Conversations, Travel on August 6, 2010 at 7:32 am
the day after…
