Leonhard Euler,
The Seven Bridges of Königsberg…
“ Leibnitz spoke of it first, calling it the "geometry of position" (geometria situs) . This branch of geometry deals with relations dependent on position alone, and investigates the properties of position; it does not take magnitudes into consideration, nor does it involve calculation with quantities. But as yet no satisfactory definition has been given of the problems that belong to this geometry of position or of the method to be used in solving them. ”
