Diagrammatic Polyhedral Algebra
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We extend the theory of Interacting Hopf algebras with an order primitive, and give a sound and complete axiomatisation of the prop of polyhedral cones. Next, we axiomatise an affine extension and prove soundness and completeness for the prop of polyhedra. Adding a register results in a concurrent extension of the calculus of signal flow graphs, powerful enough to capture continuous Petri nets.
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