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Physics, Topology, Logic and Computation:

By A Rosetta Stone, John C. Baez and Mike Stay


Category theory is a very general formalism, but there is a certain special way that physicists use categories which turns out to have close analogues in topology, logic and computation. A category has objects and morphisms, which represent things and ways to go between things. In physics, the objects are often physical systems, and the morphisms are processes turning a state of one physical system into a state of another system — perhap

Year: 2009
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