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| Mirrors > Home > ILE Home > Th. List > ressval2 | GIF version | ||
| Description: Value of nontrivial structure restriction. (Contributed by Stefan O'Rear, 29-Nov-2014.) |
| Ref | Expression |
|---|---|
| ressbas.r | ⊢ 𝑅 = (𝑊 ↾s 𝐴) |
| ressbas.b | ⊢ 𝐵 = (Base‘𝑊) |
| Ref | Expression |
|---|---|
| ressval2 | ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressvalsets 13361 | . . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → (𝑊 ↾s 𝐴) = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) | |
| 2 | ressbas.r | . . 3 ⊢ 𝑅 = (𝑊 ↾s 𝐴) | |
| 3 | ressbas.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝑊) | |
| 4 | 3 | ineq2i 3423 | . . . . 5 ⊢ (𝐴 ∩ 𝐵) = (𝐴 ∩ (Base‘𝑊)) |
| 5 | 4 | opeq2i 3892 | . . . 4 ⊢ 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉 = 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉 |
| 6 | 5 | oveq2i 6069 | . . 3 ⊢ (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉) = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉) |
| 7 | 1, 2, 6 | 3eqtr4g 2292 | . 2 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉)) |
| 8 | 7 | 3adant1 1042 | 1 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉)) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ∧ w3a 1005 = wceq 1398 ∈ wcel 2205 ∩ cin 3213 ⊆ wss 3214 〈cop 3697 ‘cfv 5357 (class class class)co 6058 ndxcnx 13293 sSet csts 13294 Basecbs 13296 ↾s cress 13297 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1re 8237 ax-addrcl 8240 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-iota 5317 df-fun 5359 df-fv 5365 df-ov 6061 df-oprab 6062 df-mpo 6063 df-inn 9255 df-ndx 13299 df-slot 13300 df-base 13302 df-sets 13303 df-iress 13304 |
| This theorem is referenced by: (None) |
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