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| Mirrors > Home > ILE Home > Th. List > nfbr | GIF version | ||
| Description: Bound-variable hypothesis builder for binary relation. (Contributed by NM, 1-Sep-1999.) (Revised by Mario Carneiro, 14-Oct-2016.) |
| Ref | Expression |
|---|---|
| nfbr.1 | ⊢ Ⅎ𝑥𝐴 |
| nfbr.2 | ⊢ Ⅎ𝑥𝑅 |
| nfbr.3 | ⊢ Ⅎ𝑥𝐵 |
| Ref | Expression |
|---|---|
| nfbr | ⊢ Ⅎ𝑥 𝐴𝑅𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfbr.1 | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
| 2 | 1 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐴) |
| 3 | nfbr.2 | . . . 4 ⊢ Ⅎ𝑥𝑅 | |
| 4 | 3 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝑅) |
| 5 | nfbr.3 | . . . 4 ⊢ Ⅎ𝑥𝐵 | |
| 6 | 5 | a1i 9 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐵) |
| 7 | 2, 4, 6 | nfbrd 4155 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴𝑅𝐵) |
| 8 | 7 | mptru 1407 | 1 ⊢ Ⅎ𝑥 𝐴𝑅𝐵 |
| Colors of variables: wff set class |
| Syntax hints: ⊤wtru 1399 Ⅎwnf 1509 Ⅎwnfc 2371 class class class wbr 4109 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2815 df-un 3215 df-sn 3695 df-pr 3696 df-op 3698 df-br 4110 |
| This theorem is referenced by: sbcbrg 4164 nfpo 4422 nfso 4423 pofun 4433 nfse 4462 nffrfor 4469 nfwe 4476 nfco 4920 nfcnv 4934 dfdmf 4949 dfrnf 4998 nfdm 5001 dffun6f 5365 dffun4f 5368 nffv 5680 funfvdm2f 5742 fvmptss2 5752 f1ompt 5828 fmptco 5843 nfiso 5979 nfofr 6273 ofrfval2 6283 tposoprab 6511 modom 7061 xpcomco 7077 nfsup 7283 caucvgprprlemaddq 8023 lble 9221 nfsum1 12041 nfsum 12042 fsum00 12148 mertenslem2 12222 nfcprod1 12240 nfcprod 12241 fprodap0 12307 fprodrec 12315 fproddivapf 12317 fprodap0f 12322 fprodle 12326 oddpwdclemdvds 12867 oddpwdclemndvds 12868 |
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