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Full abstraction for fair testing in CCS (expanded version)

Tom Hirschowitz.

In previous work with Pous, we defined a semantics for CCS which may both be viewed as an innocent form of presheaf semantics and as a concurrent form of game semantics. We define in this setting an analogue of fair testing equivalence, which we prove fully abstract w.r.t. standard fair testing&nbsp;[&hellip;]

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Variable binding and substitution for (nameless) dummies

André Hirschowitz ; Tom Hirschowitz ; Ambroise Lafont ; Marco Maggesi.

By abstracting over well-known properties of De Bruijn's representation with nameless dummies, we design a new theory of syntax with variable binding and capture-avoiding substitution. We propose it as a simpler alternative to Fiore, Plotkin, and Turi's approach, with which we establish a strong&nbsp;[&hellip;]

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