Representing the language of a topos as quotient of the category of spans
M. Golshani, A. Shiralinasab Langari
Published: 2022/1/24
Abstract
We use quotients of span categories to introduce the language of a topos. We also study the logical relations and the quotients of span categories derived from them. As an application we show that the category of Boolean toposes is a reflective subcategory of the category of toposes, when the morphisms are logical functors.