15 citations · 48 across the 5 of their papers we have counts for
6 papers
Structured versus Decorated Cospans
John C. Baez, Kenny Courser, Christina Vasilakopoulou
One goal of applied category theory is to understand open systems. We compare two ways of describing open systems as cospans equipped with extra data. First, given a functor $L \co…
Open Systems: A Double Categorical Perspective
Kenny Courser
Fong developed `decorated cospans' to model various kinds of open systems: that is, systems with inputs and outputs. In this framework, open systems are seen as the morphisms of a…
Structured Cospans
John C. Baez, Kenny Courser
One goal of applied category theory is to better understand networks appearing throughout science and engineering. Here we introduce "structured cospans" as a way to study networks…
Coarse-Graining Open Markov Processes
John C. Baez, Kenny Courser
Coarse-graining is a standard method of extracting a simple Markov process from a more complicated one by identifying states. Here we extend coarse-graining to open Markov processe…
Spans of cospans in a topos
Daniel Cicala, Kenny Courser
For a topos , there is a bicategory whose objects are those of , morphisms are cospans in , and 2-morphisms are isomo…
A bicategory of decorated cospans
Kenny Courser
If is a category with pullbacks then there is a bicategory with the same objects as , spans as morphisms, and maps of spans as 2-morphisms, as shown by Ben…