What is "topos"

"literary theme," 1948, from Greek topos, literally "place."

n. 1 A literary theme or motif; a rhetorical convention or formula. 2 (context mathematics English) A certain mathematical structure found in category theory.

1. n. a traditional theme or motif or literary convention; "James Joyce uses the topos of the Wandering Jew in his Ulysses"

2. [also: topoi (pl)]

In mathematics, a topos (, ; plural topoi or , or toposes) is a category that behaves like the category of sheaves of sets on a topological space (or more generally: on a site). Topoi behave much like the category of sets and possess a notion of localization; they are in a sense a generalization of point-set topology. The Grothendieck topoi find applications in algebraic geometry; the more general elementary topoi are used in logic.

Topos may refer to:

• Topos (plural topoi) – a type of category in mathematics
  • Classifying topos –a topos that categorifies the models of a structure in another topos
  • Effective topos –a topos that captures the idea of effectivity in mathematics
  • Étale topos –the category of étale sheaves
  • Topos theory – the theory of mathematical topoi
• Rhetoric topos – topoi in rhetorical invention
• Literary topos – topoi in literary theory
• Los Topos –California theatre troup
• Oo-Topos – interactive science fiction game
• Topical logic –reasoning from commonplace topoi
• Topo (climbing) (plural topos) –description of a climbing route
• Topos de Reynosa FC – a Mexican football club
• Topos de Tlatelolco – a non-for-profit rescue organization based in Mexico
• Topos hyperuranionos –Platonic realm of archetypes