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Mirrors > Home > MPE Home > Th. List > rexnal3 | Structured version Visualization version Unicode version |
Description: Relationship between three restricted universal and existential quantifiers. (Contributed by Thierry Arnoux, 12-Jul-2020.) |
Ref | Expression |
---|---|
rexnal3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rexnal 2995 |
. . 3
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2 | 1 | 2rexbii 3042 |
. 2
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3 | rexnal2 3043 |
. 2
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4 | 2, 3 | bitri 264 |
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 1722 ax-4 1737 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 df-ral 2917 df-rex 2918 |
This theorem is referenced by: ralnex3 3046 |
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