![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > nfop | Structured version Visualization version GIF version |
Description: Bound-variable hypothesis builder for ordered pairs. (Contributed by NM, 14-Nov-1995.) |
Ref | Expression |
---|---|
nfop.1 | ⊢ Ⅎ𝑥𝐴 |
nfop.2 | ⊢ Ⅎ𝑥𝐵 |
Ref | Expression |
---|---|
nfop | ⊢ Ⅎ𝑥〈𝐴, 𝐵〉 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfopif 4832 | . 2 ⊢ 〈𝐴, 𝐵〉 = if((𝐴 ∈ V ∧ 𝐵 ∈ V), {{𝐴}, {𝐴, 𝐵}}, ∅) | |
2 | nfop.1 | . . . . 5 ⊢ Ⅎ𝑥𝐴 | |
3 | 2 | nfel1 2918 | . . . 4 ⊢ Ⅎ𝑥 𝐴 ∈ V |
4 | nfop.2 | . . . . 5 ⊢ Ⅎ𝑥𝐵 | |
5 | 4 | nfel1 2918 | . . . 4 ⊢ Ⅎ𝑥 𝐵 ∈ V |
6 | 3, 5 | nfan 1902 | . . 3 ⊢ Ⅎ𝑥(𝐴 ∈ V ∧ 𝐵 ∈ V) |
7 | 2 | nfsn 4673 | . . . 4 ⊢ Ⅎ𝑥{𝐴} |
8 | 2, 4 | nfpr 4656 | . . . 4 ⊢ Ⅎ𝑥{𝐴, 𝐵} |
9 | 7, 8 | nfpr 4656 | . . 3 ⊢ Ⅎ𝑥{{𝐴}, {𝐴, 𝐵}} |
10 | nfcv 2902 | . . 3 ⊢ Ⅎ𝑥∅ | |
11 | 6, 9, 10 | nfif 4521 | . 2 ⊢ Ⅎ𝑥if((𝐴 ∈ V ∧ 𝐵 ∈ V), {{𝐴}, {𝐴, 𝐵}}, ∅) |
12 | 1, 11 | nfcxfr 2900 | 1 ⊢ Ⅎ𝑥〈𝐴, 𝐵〉 |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 396 ∈ wcel 2106 Ⅎwnfc 2882 Vcvv 3446 ∅c0 4287 ifcif 4491 {csn 4591 {cpr 4593 〈cop 4597 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-v 3448 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4288 df-if 4492 df-sn 4592 df-pr 4594 df-op 4598 |
This theorem is referenced by: nfopd 4852 moop2 5464 iunopeqop 5483 fliftfuns 7264 dfmpo 8039 qliftfuns 8750 xpf1o 9090 nfseq 13926 txcnp 23008 cnmpt1t 23053 cnmpt2t 23061 flfcnp2 23395 nosupbnd2 27101 noinfbnd2 27116 bnj958 33641 bnj1000 33642 bnj1446 33746 bnj1447 33747 bnj1448 33748 bnj1466 33754 bnj1467 33755 bnj1519 33766 bnj1520 33767 bnj1529 33771 poimirlem26 36177 nfopdALT 37506 nfaov 45531 |
Copyright terms: Public domain | W3C validator |