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Mirrors > Home > NFE Home > Th. List > exbidh | Unicode version |
Description: Formula-building rule for existential quantifier (deduction rule). (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
exbidh.1 |
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exbidh.2 |
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Ref | Expression |
---|---|
exbidh |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exbidh.1 |
. . 3
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2 | exbidh.2 |
. . 3
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3 | 1, 2 | alrimih 1565 |
. 2
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4 | exbi 1581 |
. 2
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5 | 3, 4 | syl 15 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 |
This theorem depends on definitions: df-bi 177 df-ex 1542 |
This theorem is referenced by: exbidv 1626 exbid 1773 drex2 1968 |
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