topologies

Noun

topology (countable and uncountable, plural topologies)

1. (uncountable) The branch of mathematics dealing with those properties of a geometrical object (of arbitrary dimensionality) that are unchanged by continuous deformations (such as stretching, bending, etc., without tearing or gluing).
   • 1970 [Addison-Wesley], Stephen Willard, General Topology, 2012, Dover, page v,
     This book is designed to develop the fundamental concepts of general topology which are the basic tools of working mathematicians in a variety of fields.

   Synonyms:

   analysis situs, geometria situs

2. Any collection τ of subsets of a given set X that contains both the empty set and X, and which is closed under finitary intersections and arbitrary unions.
   • A set X equipped with a topology #92;tau is called a topological space and denoted (X,#92;tau).
3. The anatomical structure of part of the body.
4. The arrangement of nodes in a communications network.
5. The properties of a particular technological embodiment that are not affected by differences in the physical layout or form of its application.
6. The topographical study of geographic locations or given places in relation to their history.

See all 7 meanings of topology