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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 4176 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴𝑅𝐵) |
| 8 | 7 | mptru 1411 | 1 ⊢ Ⅎ𝑥 𝐴𝑅𝐵 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ⊤wtru 1403 Ⅎwnf 1513 Ⅎwnfc 2379 class class class wbr 4130 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 df-br 4131 |
| This theorem is used by: sbcbrg 4185 nfpo 4446 nfso 4447 pofun 4457 nfse 4486 nffrfor 4493 nfwe 4500 nfco 4945 nfcnv 4959 dfdmf 4974 dfrnf 5023 nfdm 5026 dffun6f 5390 dffun4f 5393 nffv 5705 funfvdm2f 5768 fvmptss2 5780 f1ompt 5859 fmptco 5874 nfiso 6012 nfofr 6309 ofrfval2 6319 tposoprab 6551 modom 7108 xpcomco 7124 nfsup 7332 caucvgprprlemaddq 8075 lble 9277 nfsum1 12122 nfsum 12123 fsum00 12229 mertenslem2 12303 nfcprod1 12321 nfcprod 12322 fprodap0 12388 fprodrec 12396 fproddivapf 12398 fprodap0f 12403 fprodle 12407 oddpwdclemdvds 12948 oddpwdclemndvds 12949 |
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