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Coalgebra for the working programming languages researcher

Talkat POPL 2022 · 2022-01-16..01-22· [compilers-and-language-design]
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Coalgebraic methods center on a functor that generates syntax, denotational and operational semantics, and equivalence proofs; from that one structure researchers derive concrete algorithms such as the NetKAT POPL’15 algorithm for network language equivalence and NFA checks based on bisimulation up to congruence that outperform bespoke algorithms. Implementations exist as pieces: the circ/K-framework work, Coq libraries and OCaml/co‑pattern extensions, and follow‑up papers (POPL’17 learning extensions, PLDI’19 MacNetKAT fragment) show the approach yields practical, provably correct tools.

AI-written summary · about

  1. 0:00Start
  2. 20:58Coalgebra and Coinduction by example
  3. 36:31Final coalgebra
  4. 45:13And beyond automata?
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