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Mirrors > Home > NFE Home > Th. List > orim1i | Unicode version |
Description: Introduce disjunct to both sides of an implication. (Contributed by NM, 6-Jun-1994.) |
Ref | Expression |
---|---|
orim1i.1 |
Ref | Expression |
---|---|
orim1i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | orim1i.1 | . 2 | |
2 | id 19 | . 2 | |
3 | 1, 2 | orim12i 502 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wo 357 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 177 df-or 359 |
This theorem is referenced by: 19.34 1663 r19.45av 2768 leconnnc 6218 |
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