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Sort Generation Constraints

It may be specified that a sort is generated by a set of functions, so that proof by induction is sound for that sort.
For generality, CASL does not restrict all models to be finitely-generated (i.e., reachable). The specifier may indicate that a particular sort (or set of sorts) is to be generated by a particular set of functions, much as in LARCH.
CoFI Tentative Document: Mosses97TAPSOFT --TAPSOFT'97-- April 1997.
Comments to pdmosses@brics.dk