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I agree. These definitions make it clearer that each is a superset of the next. That's nice. I'll go ahead and change the table to use those definitions. The "maybe S->ε" part can go in a sentence after the table, since it also needs to explain that if you use that form, you can't have S on the right side for Type-1. I changed it from a hierarchy of languages to a hierarchy of grammars, and got rid of the "Chomsky-n" and "CHn" names before, but it slipped back in when the bullets were re-expanded. I'll make that change again. -LC Useful links for further work * [1] * [2] |
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