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.. therefore 11 个 arrow ".."or".:" (colon and period, in either order) " (dash + greater than), or simply")" "<->" (less
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.. therefore 11 个 arrow ".."or".:" (colon and period, in either order) " (dash + greater than), or simply")" "<->" (less
.. therefore 11 个 arrow ".."or".:" (colon and period, in either order) " (dash + greater than), or simply")" "<->" (less than + dash + greater than), or simply double arrow conjunction (dot) "." (a period) > disjunction (wedge) "V" (lower case letter vee) Construct direct proofs to show that the following symbolic arguments are valid. Commas mark the breaks between premises. 1. F→( GH), “F→J, (GH):: J 2. P>Q,R*~s, P v R, (Qv~)-(Tv W), -T.:-W
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