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Mirrors > Home > ILE Home > Th. List > nfr | Unicode version |
Description: Consequence of the definition of not-free. (Contributed by Mario Carneiro, 26-Sep-2016.) |
Ref | Expression |
---|---|
nfr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nf 1347 |
. 2
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2 | sp 1398 |
. 2
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3 | 1, 2 | sylbi 114 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-4 1397 |
This theorem depends on definitions: df-bi 110 df-nf 1347 |
This theorem is referenced by: nfri 1409 nfrd 1410 nfimd 1474 19.23t 1564 equs5or 1708 sbequi 1717 sbft 1725 sbcomxyyz 1843 rgen2a 2369 |
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