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+---
+title: Propagators
+contributors: Mariano Guerra
+---
+
+## Abstract
+
+We develop a programming model built on the idea that the basic computational elements are autonomous machines interconnected by shared cells through which they communicate.
+
+Each machine continuously examines the cells it is interested in, and adds information to some based on deductions it can make from information from the others.
+
+This model makes it easy to smoothly combine expression-oriented and constraint-based programming; it also easily accommodates implicit incremental distributed search in ordinary programs.
+
+## Papers
+
+- [The Art of the Propagator - Alexey Radul & Gerald Jay Sussman](https://citeseerx.ist.psu.edu/document?doi=755c48fd10aa303497ef849977c36529c0bb09ff&repid=rep1&type=pdf)
+
+## Presentations
+
+- [Gerald Jay Sussman The Art of the Propagator](https://www.youtube.com/watch?v=-hQFrKspQHA)
+- [George Wilson - An Intuition for Propagators - Compose Melbourne 2019](https://www.youtube.com/watch?v=nY1BCv3xn24)
+- [Propagators Part 1 • Edward Kmett • YOW! 2016](https://www.youtube.com/watch?v=tETbivwzXBM)