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.

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

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