Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site sbcs.UUCP Path: utzoo!linus!philabs!sbcs!debray From: debray@sbcs.UUCP (Saumya Debray) Newsgroups: net.math Subject: logic question Message-ID: <557@sbcs.UUCP> Date: Sat, 24-Dec-83 13:00:40 EST Article-I.D.: sbcs.557 Posted: Sat Dec 24 13:00:40 1983 Date-Received: Sun, 25-Dec-83 04:24:35 EST Distribution: net.all Organization: SUNY at Stony Brook Lines: 24 : Given two logics A and B, and A is more expressive than B: (1) if A and B are both decidable, does the fact that A is more expressive than B imply that A's decision procedure is harder (i.e. of higher complexity) than B's? (2) if A and B are not both decidable, does the fact that A is more expressive than B imply that A is of a higher unsolvability degree than B? -- Saumya Debray SUNY at Stony Brook {floyd, bunker, cbosgd, mcvax, cmcl2}!philabs! \ Usenet: sbcs!debray / {allegra, teklabs, hp-pcd, metheus}!ogcvax! CSNet: debray@suny-sbcs@CSNet-Relay