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Related theorems GIF version |
| Description: Deduction from subclass principle for relations. |
| Ref | Expression |
|---|---|
| relssdv.1 | ⊢ (φ → Rel A) |
| relssdv.2 | ⊢ (φ → (〈x, y〉 ∈ A → 〈x, y〉 ∈ B)) |
| Ref | Expression |
|---|---|
| relssdv | ⊢ (φ → A ⊆ B) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relssdv.2 | . . 3 ⊢ (φ → (〈x, y〉 ∈ A → 〈x, y〉 ∈ B)) | |
| 2 | 1 | 19.21aivv 1329 | . 2 ⊢ (φ → ∀x∀y(〈x, y〉 ∈ A → 〈x, y〉 ∈ B)) |
| 3 | relssdv.1 | . . 3 ⊢ (φ → Rel A) | |
| 4 | ssrel 3304 | . . 3 ⊢ (Rel A → (A ⊆ B ↔ ∀x∀y(〈x, y〉 ∈ A → 〈x, y〉 ∈ B))) | |
| 5 | 3, 4 | syl 10 | . 2 ⊢ (φ → (A ⊆ B ↔ ∀x∀y(〈x, y〉 ∈ A → 〈x, y〉 ∈ B))) |
| 6 | 2, 5 | mpbird 203 | 1 ⊢ (φ → A ⊆ B) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ↔ wb 153 ∀wal 995 ∈ wcel 999 ⊆ wss 2098 〈cop 2463 Rel wrel 3232 |
| This theorem is referenced by: ssxp 3313 relssres 3449 relssdr 3570 aceq3lem 4794 infxpidmlem7 7650 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1003 ax-gen 1004 ax-8 1005 ax-10 1007 ax-11 1008 ax-12 1009 ax-13 1010 ax-14 1011 ax-17 1012 ax-4 1014 ax-5o 1016 ax-6o 1019 ax-9o 1164 ax-10o 1182 ax-16 1252 ax-11o 1260 ax-ext 1504 ax-sep 2758 ax-pow 2798 ax-pr 2835 |
| This theorem depends on definitions: df-bi 154 df-or 231 df-an 232 df-ex 1022 df-sb 1214 df-eu 1424 df-mo 1425 df-clab 1510 df-cleq 1515 df-clel 1518 df-ne 1634 df-v 1859 df-dif 2100 df-un 2101 df-in 2102 df-ss 2104 df-nul 2332 df-pw 2454 df-sn 2464 df-pr 2465 df-op 2468 df-opab 2722 df-xp 3241 df-rel 3242 |