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出典:Wikipedia
出典:『Wikipedia』 (2011/07/10 15:22 UTC 版)
In logic, a logical framework provides a means to define (or present) a logic as a signature in a higher-order type theory in such a way that provability of a formula in the original logic reduces to a type inhabitation problem in the framework type theory. This approach has been used successfully for (interactive) automated theorem proving. The first logical framework was Automath, however the name of the idea comes from the more widely known Edinburgh Logical Framework, LF. Several more recent proof tools like Isabelle (theorem prover) are based on this idea. Unlike a direct embedding, the logical framework approach allows many logics to be embedded in the same type system.