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Mirrors > Home > ILE Home > Th. List > resid | GIF version |
Description: Any relation restricted to the universe is itself. (Contributed by NM, 16-Mar-2004.) |
Ref | Expression |
---|---|
resid | ⊢ (Rel 𝐴 → (𝐴 ↾ V) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssv 3163 | . 2 ⊢ dom 𝐴 ⊆ V | |
2 | relssres 4921 | . 2 ⊢ ((Rel 𝐴 ∧ dom 𝐴 ⊆ V) → (𝐴 ↾ V) = 𝐴) | |
3 | 1, 2 | mpan2 422 | 1 ⊢ (Rel 𝐴 → (𝐴 ↾ V) = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1343 Vcvv 2725 ⊆ wss 3115 dom cdm 4603 ↾ cres 4605 Rel wrel 4608 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-14 2139 ax-ext 2147 ax-sep 4099 ax-pow 4152 ax-pr 4186 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2296 df-ral 2448 df-rex 2449 df-v 2727 df-un 3119 df-in 3121 df-ss 3128 df-pw 3560 df-sn 3581 df-pr 3582 df-op 3584 df-br 3982 df-opab 4043 df-xp 4609 df-rel 4610 df-dm 4613 df-res 4615 |
This theorem is referenced by: (None) |
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