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Mirrors > Home > ILE Home > Th. List > pm5.501 | Unicode version |
Description: Theorem *5.501 of [WhiteheadRussell] p. 125. (Contributed by NM, 3-Jan-2005.) (Revised by NM, 24-Jan-2013.) |
Ref | Expression |
---|---|
pm5.501 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm5.1im 162 | . 2 | |
2 | bi1 111 | . . 3 | |
3 | 2 | com12 27 | . 2 |
4 | 1, 3 | impbid 120 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 98 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 |
This theorem depends on definitions: df-bi 110 |
This theorem is referenced by: ibib 234 ibibr 235 pm5.1 533 pm5.18dc 777 biassdc 1286 |
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