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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 4177 | . 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 4131 |
| 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 4132 |
| This theorem is used by: sbcbrg 4186 nfpo 4448 nfso 4449 pofun 4459 nfse 4488 nffrfor 4495 nfwe 4502 nfco 4947 nfcnv 4961 dfdmf 4976 dfrnf 5025 nfdm 5028 dffun6f 5393 dffun4f 5396 nffv 5708 funfvdm2f 5771 fvmptss2 5783 f1ompt 5862 fmptco 5877 nfiso 6015 nfofr 6313 ofrfval2 6323 tposoprab 6555 modom 7112 xpcomco 7128 nfsup 7338 caucvgprprlemaddq 8081 lble 9285 nfsum1 12147 nfsum 12148 fsum00 12254 mertenslem2 12328 nfcprod1 12346 nfcprod 12347 fprodap0 12413 fprodrec 12421 fproddivapf 12423 fprodap0f 12428 fprodle 12432 nnmaxpwlemdvds 12974 nnmaxpwlemndvds 12975 |
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