Mon, 02 Dec 2013 20:31:54 +0100 blanchet revert making 'map_cong' a 'cong' -- it breaks too many proofs in the AFP
Mon, 02 Dec 2013 20:31:54 +0100 blanchet avoid user-level 'Specification.definition' for low-level definitions
Mon, 02 Dec 2013 20:31:54 +0100 blanchet repaired inconsistency introduced in transiting to 'Local_Theory.define'
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