A --> B simple explanation

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From: hefors
Date: Tue, 27 Oct 1992 09:13

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  "A only if B" is of course "A --> B". Now, "^B" implies "^A". A is true only
if B is true.

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From: hefors@sara.cc.utu.fi
Subject: A --> B simple explanation
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Date: Tue, 27 Oct 1992 09:13:57 GMT