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Mirrors > Home > ILE Home > Th. List > nfso | GIF version |
Description: Bound-variable hypothesis builder for total orders. (Contributed by Stefan O'Rear, 20-Jan-2015.) |
Ref | Expression |
---|---|
nfpo.r | ⊢ Ⅎ𝑥𝑅 |
nfpo.a | ⊢ Ⅎ𝑥𝐴 |
Ref | Expression |
---|---|
nfso | ⊢ Ⅎ𝑥 𝑅 Or 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-iso 4297 | . 2 ⊢ (𝑅 Or 𝐴 ↔ (𝑅 Po 𝐴 ∧ ∀𝑎 ∈ 𝐴 ∀𝑏 ∈ 𝐴 ∀𝑐 ∈ 𝐴 (𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏)))) | |
2 | nfpo.r | . . . 4 ⊢ Ⅎ𝑥𝑅 | |
3 | nfpo.a | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
4 | 2, 3 | nfpo 4301 | . . 3 ⊢ Ⅎ𝑥 𝑅 Po 𝐴 |
5 | nfcv 2319 | . . . . . . . 8 ⊢ Ⅎ𝑥𝑎 | |
6 | nfcv 2319 | . . . . . . . 8 ⊢ Ⅎ𝑥𝑏 | |
7 | 5, 2, 6 | nfbr 4049 | . . . . . . 7 ⊢ Ⅎ𝑥 𝑎𝑅𝑏 |
8 | nfcv 2319 | . . . . . . . . 9 ⊢ Ⅎ𝑥𝑐 | |
9 | 5, 2, 8 | nfbr 4049 | . . . . . . . 8 ⊢ Ⅎ𝑥 𝑎𝑅𝑐 |
10 | 8, 2, 6 | nfbr 4049 | . . . . . . . 8 ⊢ Ⅎ𝑥 𝑐𝑅𝑏 |
11 | 9, 10 | nfor 1574 | . . . . . . 7 ⊢ Ⅎ𝑥(𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏) |
12 | 7, 11 | nfim 1572 | . . . . . 6 ⊢ Ⅎ𝑥(𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏)) |
13 | 3, 12 | nfralxy 2515 | . . . . 5 ⊢ Ⅎ𝑥∀𝑐 ∈ 𝐴 (𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏)) |
14 | 3, 13 | nfralxy 2515 | . . . 4 ⊢ Ⅎ𝑥∀𝑏 ∈ 𝐴 ∀𝑐 ∈ 𝐴 (𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏)) |
15 | 3, 14 | nfralxy 2515 | . . 3 ⊢ Ⅎ𝑥∀𝑎 ∈ 𝐴 ∀𝑏 ∈ 𝐴 ∀𝑐 ∈ 𝐴 (𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏)) |
16 | 4, 15 | nfan 1565 | . 2 ⊢ Ⅎ𝑥(𝑅 Po 𝐴 ∧ ∀𝑎 ∈ 𝐴 ∀𝑏 ∈ 𝐴 ∀𝑐 ∈ 𝐴 (𝑎𝑅𝑏 → (𝑎𝑅𝑐 ∨ 𝑐𝑅𝑏))) |
17 | 1, 16 | nfxfr 1474 | 1 ⊢ Ⅎ𝑥 𝑅 Or 𝐴 |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 ∨ wo 708 Ⅎwnf 1460 Ⅎwnfc 2306 ∀wral 2455 class class class wbr 4003 Po wpo 4294 Or wor 4295 |
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-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-v 2739 df-un 3133 df-sn 3598 df-pr 3599 df-op 3601 df-br 4004 df-po 4296 df-iso 4297 |
This theorem is referenced by: (None) |
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