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Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > 2reu5a | Structured version Visualization version Unicode version |
Description: Double restricted existential uniqueness in terms of restricted existence and restricted "at most one." (Contributed by Alexander van der Vekens, 17-Jun-2017.) |
Ref | Expression |
---|---|
2reu5a |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reu5 3159 |
. 2
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2 | reu5 3159 |
. . . 4
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3 | 2 | rexbii 3041 |
. . 3
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4 | 2 | rmobii 3133 |
. . 3
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5 | 3, 4 | anbi12i 733 |
. 2
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6 | 1, 5 | 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 ax-5 1839 ax-6 1888 ax-7 1935 ax-12 2047 |
This theorem depends on definitions: df-bi 197 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-eu 2474 df-mo 2475 df-rex 2918 df-reu 2919 df-rmo 2920 |
This theorem is referenced by: 2reu1 41186 |
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