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Mirrors > Home > ILE Home > Th. List > pm5.4 | Unicode version |
Description: Antecedent absorption implication. Theorem *5.4 of [WhiteheadRussell] p. 125. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
pm5.4 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.43 52 | . 2 | |
2 | ax-1 5 | . 2 | |
3 | 1, 2 | impbii 124 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: sbequ8 1768 moabs 1990 rgenm 3343 isprm4 10501 |
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