"Stochastic Petri nets, chemical reaction networks and Feynman diagrams"

4 March 2014
<p><span>&nbsp;Nature and the world of human technology are full of</span><br /><span>networks. People like to draw diagrams of networks: flow charts,</span><br /><span>electrical circuit diagrams, signal flow diagrams, Bayesian networks,</span><br /><span>Feynman diagrams and the like. Mathematically-minded people know that</span><br /><span>in principle these diagrams fit into a common framework: category</span><br /><span>theory. But we are still far from a unified theory of networks.</span></p>