Oct. 28, 1981 to Oct. 30, 1981
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/SFCS.1981.36
Two distinct models for the notion of communicating processes are introduced, developed and related. The first, called the possible-futures model, is a generalization to nondeterministic systems of the familiar derivative (Nerode equivalence class) construction. The second, called the acceptance-refusals model, is a slight strengthening of a model introduced by Hoare, Brookes, and Roscoe. The PF model can be mapped onto the AR model homomorphically, and the equivalence classes of this map can be characterized by imposing a very natural equivalence relation on the PF model. The resulting quotient algebra admits a complete partial order structure in which the algebraic operations are continuous.
W. C. Rounds, S. D. Brookes, "Possible futures, acceptances, refusals, and communicating processes", FOCS, 1981, 2013 IEEE 54th Annual Symposium on Foundations of Computer Science, 2013 IEEE 54th Annual Symposium on Foundations of Computer Science 1981, pp. 140-149, doi:10.1109/SFCS.1981.36