Monads in double categories

Author

Fiore, Thomas M.

Gambino, Nicola

Kock, Joachim

Other authors

Centre de Recerca Matemàtica

Publication date

2010-06



Abstract

We extend the basic concepts of Street's formal theory of monads from the setting of 2-categories to that of double categories. In particular, we introduce the double category Mnd(C) of monads in a double category C and dene what it means for a double category to admit the construction of free monads. Our main theorem shows that, under some mild conditions, a double category that is a framed bicategory admits the construction of free monads if its horizontal 2-category does. We apply this result to obtain double adjunctions which extend the adjunction between graphs and categories and the adjunction between polynomial endofunctors and polynomial monads.

Document Type

Preliminary Edition

Language

English

CDU Subject

510 - Fundamental and general considerations of mathematics

Subject

Categories (Matemàtica); Demostració, Teoria de la

Pages

37

295932 bytes

Publisher

Centre de Recerca Matemàtica

Collection

Prepublicacions del Centre de Recerca Matemàtica; 951

Documents

Pr951.pdf

288.9Kb

 

Rights

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