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Mirrors > Home > ILE Home > Th. List > pm1.4 | Unicode version |
Description: Axiom *1.4 of [WhiteheadRussell] p. 96. (Contributed by NM, 3-Jan-2005.) (Revised by NM, 15-Nov-2012.) |
Ref | Expression |
---|---|
pm1.4 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | olc 632 | . 2 | |
2 | orc 633 | . 2 | |
3 | 1, 2 | jaoi 636 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wo 629 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 |
This theorem depends on definitions: df-bi 110 |
This theorem is referenced by: orcom 647 orcoms 649 pm2.3 692 pm2.36 717 pm2.37 718 pm2.8 723 dveeq2or 1697 prneimg 3545 |
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