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Animated map

Wonderful, funny and didactic example of a cartographic object that is an animated map: the division of Hungary kingdom after the Trianon Treaty of 1920. By @crouchrarebooks

Mathematic development and cartography: the problem of the seven bridges of Königsberg

It is well known that mathematics are essencial for cartography. Less known the contribution of this last one to the mathematic development.   An interesting example is the postulation of the Graph theory made by Leonhard Euler in 1735, when he faced to the problem of the seven bridges of Königsberg (currently Kaliningrad): how visit every district of the city without […]