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Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-axext3 | Structured version Visualization version Unicode version |
Description: Remove dependency on ax-13 2246 from axext3 2604. (Contributed by BJ, 12-Jul-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-axext3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elequ2 2004 |
. . . . 5
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2 | 1 | bibi1d 333 |
. . . 4
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3 | 2 | albidv 1849 |
. . 3
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4 | equequ1 1952 |
. . 3
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5 | 3, 4 | imbi12d 334 |
. 2
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6 | ax-ext 2602 |
. 2
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7 | 5, 6 | bj-chvarvv 32726 |
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-9 1999 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 |
This theorem is referenced by: bj-axext4 32770 |
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