Category:Topology

Topology is a geometry of transformations in which the only invariant is continuity.

The original name of this subject was geometria situs, or analysis situs (i.e. geometry / analysis of position).

The word topology was coined by Johann Benedict Listing in a letter of 1836.

The word was first published in the title of Listing's 1847 book Vorstudien zur Topologie, but the word never caught on until the 1920's.