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Mirrors > Home > MPE Home > Th. List > nfoprab3 | Structured version Visualization version Unicode version |
Description: The abstraction variables in an operation class abstraction are not free. (Contributed by NM, 22-Aug-2013.) |
Ref | Expression |
---|---|
nfoprab3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-oprab 6312 |
. 2
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2 | nfe1 1935 |
. . . . 5
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3 | 2 | nfex 2050 |
. . . 4
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4 | 3 | nfex 2050 |
. . 3
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5 | 4 | nfab 2616 |
. 2
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6 | 1, 5 | nfcxfr 2610 |
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 1677 ax-4 1690 ax-5 1766 ax-6 1813 ax-7 1859 ax-10 1932 ax-11 1937 ax-12 1950 ax-13 2104 ax-ext 2451 |
This theorem depends on definitions: df-bi 190 df-an 378 df-tru 1455 df-ex 1672 df-nf 1676 df-sb 1806 df-clab 2458 df-cleq 2464 df-clel 2467 df-nfc 2601 df-oprab 6312 |
This theorem is referenced by: ssoprab2b 6367 ov3 6452 tposoprab 7027 |
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