![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > dfrel3 | GIF version |
Description: Alternate definition of relation. (Contributed by NM, 14-May-2008.) |
Ref | Expression |
---|---|
dfrel3 | ⊢ (Rel 𝑅 ↔ (𝑅 ↾ V) = 𝑅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfrel2 5074 | . 2 ⊢ (Rel 𝑅 ↔ ◡◡𝑅 = 𝑅) | |
2 | cnvcnv2 5077 | . . 3 ⊢ ◡◡𝑅 = (𝑅 ↾ V) | |
3 | 2 | eqeq1i 2185 | . 2 ⊢ (◡◡𝑅 = 𝑅 ↔ (𝑅 ↾ V) = 𝑅) |
4 | 1, 3 | bitri 184 | 1 ⊢ (Rel 𝑅 ↔ (𝑅 ↾ V) = 𝑅) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 105 = wceq 1353 Vcvv 2737 ◡ccnv 4621 ↾ cres 4624 Rel wrel 4627 |
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 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-14 2151 ax-ext 2159 ax-sep 4118 ax-pow 4171 ax-pr 4205 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2739 df-un 3133 df-in 3135 df-ss 3142 df-pw 3576 df-sn 3597 df-pr 3598 df-op 3600 df-br 4001 df-opab 4062 df-xp 4628 df-rel 4629 df-cnv 4630 df-res 4634 |
This theorem is referenced by: cocnvcnv2 5135 f1ovi 5495 |
Copyright terms: Public domain | W3C validator |