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Mirrors > Home > ILE Home > Th. List > nfbrd | Unicode version |
Description: Deduction version of bound-variable hypothesis builder nfbr 3808. (Contributed by NM, 13-Dec-2005.) (Revised by Mario Carneiro, 14-Oct-2016.) |
Ref | Expression |
---|---|
nfbrd.2 | |
nfbrd.3 | |
nfbrd.4 |
Ref | Expression |
---|---|
nfbrd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-br 3765 | . 2 | |
2 | nfbrd.2 | . . . 4 | |
3 | nfbrd.4 | . . . 4 | |
4 | 2, 3 | nfopd 3566 | . . 3 |
5 | nfbrd.3 | . . 3 | |
6 | 4, 5 | nfeld 2193 | . 2 |
7 | 1, 6 | nfxfrd 1364 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wnf 1349 wcel 1393 wnfc 2165 cop 3378 class class class wbr 3764 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-v 2559 df-un 2922 df-sn 3381 df-pr 3382 df-op 3384 df-br 3765 |
This theorem is referenced by: nfbr 3808 |
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