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Mirrors > Home > MPE Home > Th. List > zfpow | Structured version Visualization version Unicode version |
Description: Axiom of Power Sets expressed with the fewest number of different variables. (Contributed by NM, 14-Aug-2003.) |
Ref | Expression |
---|---|
zfpow |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-pow 4843 |
. 2
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2 | elequ1 1997 |
. . . . . . 7
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3 | elequ1 1997 |
. . . . . . 7
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4 | 2, 3 | imbi12d 334 |
. . . . . 6
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5 | 4 | cbvalv 2273 |
. . . . 5
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6 | 5 | imbi1i 339 |
. . . 4
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7 | 6 | albii 1747 |
. . 3
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8 | 7 | exbii 1774 |
. 2
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9 | 1, 8 | mpbi 220 |
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-8 1992 ax-11 2034 ax-12 2047 ax-13 2246 ax-pow 4843 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 |
This theorem is referenced by: el 4847 axpowndlem2 9420 |
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