Cahiers de Topologie et Géometrie Différentielle Categoriques
Encyclopedia
The Cahiers de Topologie et Géométrie Différentielle Catégoriques (French
: Notebooks of categorical topology and categorical differential geometry; ) is a French mathematical
scientific journal
established by Charles Ehresmann
in 1957. It was originally published under the name Cahiers de Topologie and later Cahiers de Topologie et Géométrie Différentielle. It now concentrates on category theory
"and its applications, [e]specially in topology
and differential geometry".
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...
: Notebooks of categorical topology and categorical differential geometry; ) is a French mathematical
Mathematics
Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...
scientific journal
Scientific journal
In academic publishing, a scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. There are thousands of scientific journals in publication, and many more have been published at various points in the past...
established by Charles Ehresmann
Charles Ehresmann
Charles Ehresmann was a French mathematician who worked on differential topology and category theory. He is known for work on the topology of Lie groups, the jet concept , and his seminar on category theory.He attended the École Normale Supérieure in Paris before performing one year of military...
in 1957. It was originally published under the name Cahiers de Topologie and later Cahiers de Topologie et Géométrie Différentielle. It now concentrates on category theory
Category theory
Category theory is an area of study in mathematics that examines in an abstract way the properties of particular mathematical concepts, by formalising them as collections of objects and arrows , where these collections satisfy certain basic conditions...
"and its applications, [e]specially in topology
Topology
Topology is a major area of mathematics concerned with properties that are preserved under continuous deformations of objects, such as deformations that involve stretching, but no tearing or gluing...
and differential geometry".