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Mirrors > Home > NFE Home > Th. List > rexbiia | Unicode version |
Description: Inference adding restricted existential quantifier to both sides of an equivalence. (Contributed by NM, 26-Oct-1999.) |
Ref | Expression |
---|---|
ralbiia.1 |
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Ref | Expression |
---|---|
rexbiia |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralbiia.1 |
. . 3
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2 | 1 | pm5.32i 618 |
. 2
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3 | 2 | rexbii2 2643 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-3 7 ax-mp 8 ax-gen 1546 ax-5 1557 |
This theorem depends on definitions: df-bi 177 df-an 360 df-ex 1542 df-rex 2620 |
This theorem is referenced by: 2rexbiia 2648 ceqsrexbv 2973 reu8 3032 phialllem1 4616 finnc 6243 nchoicelem11 6299 nchoicelem16 6304 |
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