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Theorem axc5c7toc5 2242
Description: Re-derivation of ax-c5 2214 from axc5c7 2241. Only propositional calculus is used for the re-derivation. (Contributed by Scott Fenton, 12-Sep-2005.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
axc5c7toc5

Proof of Theorem axc5c7toc5
StepHypRef Expression
1 ax-1 6 . 2
2 axc5c7 2241 . 2
31, 2syl 16 1
Colors of variables: wff setvar class
Syntax hints:  -.wn 3  ->wi 4  A.wal 1393
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-c5 2214  ax-c7 2216
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