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Mirrors > Home > ILE Home > Th. List > nfre1 | Unicode version |
Description: is not free in . (Contributed by NM, 19-Mar-1997.) (Revised by Mario Carneiro, 7-Oct-2016.) |
Ref | Expression |
---|---|
nfre1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rex 2399 | . 2 | |
2 | nfe1 1457 | . 2 | |
3 | 1, 2 | nfxfr 1435 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wnf 1421 wex 1453 wcel 1465 wrex 2394 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1408 ax-gen 1410 ax-ie1 1454 |
This theorem depends on definitions: df-bi 116 df-nf 1422 df-rex 2399 |
This theorem is referenced by: r19.29an 2551 nfiu1 3813 fun11iun 5356 eusvobj2 5728 fodjuomnilemdc 6984 ismkvnex 6997 prarloclem3step 7272 prmuloc2 7343 ltexprlemm 7376 caucvgprprlemaddq 7484 caucvgsrlemgt1 7571 axpre-suploclemres 7677 supinfneg 9358 infsupneg 9359 lbzbi 9376 divalglemeunn 11545 divalglemeuneg 11547 bezoutlemmain 11613 bezout 11626 isomninnlem 13152 |
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