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Mirrors > Home > NFE Home > Th. List > reubii | Unicode version |
Description: Formula-building rule for restricted existential quantifier (inference rule). (Contributed by NM, 22-Oct-1999.) |
Ref | Expression |
---|---|
reubii.1 |
Ref | Expression |
---|---|
reubii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reubii.1 | . . 3 | |
2 | 1 | a1i 10 | . 2 |
3 | 2 | reubiia 2796 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 176 wcel 1710 wreu 2616 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-11 1746 |
This theorem depends on definitions: df-bi 177 df-an 360 df-tru 1319 df-ex 1542 df-nf 1545 df-eu 2208 df-reu 2621 |
This theorem is referenced by: 2reu5lem1 3041 |
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