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Mirrors > Home > ILE Home > Th. List > reubiia | Unicode version |
Description: Formula-building rule for restricted existential quantifier (inference rule). (Contributed by NM, 14-Nov-2004.) |
Ref | Expression |
---|---|
reubiia.1 |
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Ref | Expression |
---|---|
reubiia |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reubiia.1 |
. . . 4
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2 | 1 | pm5.32i 427 |
. . 3
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3 | 2 | eubii 1906 |
. 2
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4 | df-reu 2307 |
. 2
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5 | df-reu 2307 |
. 2
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6 | 3, 4, 5 | 3bitr4i 201 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() |
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-5 1333 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-4 1397 ax-17 1416 ax-ial 1424 |
This theorem depends on definitions: df-bi 110 df-tru 1245 df-nf 1347 df-eu 1900 df-reu 2307 |
This theorem is referenced by: reubii 2489 |
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