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| Mirrors > Home > MPE Home > Th. List > resseqnbas | Structured version Visualization version GIF version | ||
| Description: The components of an extensible structure except the base set remain unchanged on a structure restriction. (Contributed by Mario Carneiro, 26-Nov-2014.) (Revised by Mario Carneiro, 2-Dec-2014.) (Revised by AV, 19-Oct-2024.) |
| Ref | Expression |
|---|---|
| resseqnbas.r | ⊢ 𝑅 = (𝑊 ↾s 𝐴) |
| resseqnbas.e | ⊢ 𝐶 = (𝐸‘𝑊) |
| resseqnbas.f | ⊢ 𝐸 = Slot (𝐸‘ndx) |
| resseqnbas.n | ⊢ (𝐸‘ndx) ≠ (Base‘ndx) |
| Ref | Expression |
|---|---|
| resseqnbas | ⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | resseqnbas.e | . 2 ⊢ 𝐶 = (𝐸‘𝑊) | |
| 2 | resseqnbas.r | . . . . . . 7 ⊢ 𝑅 = (𝑊 ↾s 𝐴) | |
| 3 | eqid 2762 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 4 | 2, 3 | ressid2 17332 | . . . . . 6 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊) |
| 5 | 4 | fveq2d 6886 | . . . . 5 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 6 | 5 | 3expib 1140 | . . . 4 ⊢ ((Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))) |
| 7 | 2, 3 | ressval2 17333 | . . . . . . 7 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 8 | 7 | fveq2d 6886 | . . . . . 6 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉))) |
| 9 | resseqnbas.f | . . . . . . 7 ⊢ 𝐸 = Slot (𝐸‘ndx) | |
| 10 | resseqnbas.n | . . . . . . 7 ⊢ (𝐸‘ndx) ≠ (Base‘ndx) | |
| 11 | 9, 10 | setsnid 17306 | . . . . . 6 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 12 | 8, 11 | eqtr4di 2815 | . . . . 5 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 13 | 12 | 3expib 1140 | . . . 4 ⊢ (¬ (Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))) |
| 14 | 6, 13 | pm2.61i 184 | . . 3 ⊢ ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 15 | 9 | str0 17287 | . . . . . . 7 ⊢ ∅ = (𝐸‘∅) |
| 16 | 15 | eqcomi 2771 | . . . . . 6 ⊢ (𝐸‘∅) = ∅ |
| 17 | reldmress 17330 | . . . . . 6 ⊢ Rel dom ↾s | |
| 18 | 16, 2, 17 | oveqprc 17290 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘𝑅)) |
| 19 | 18 | eqcomd 2768 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 20 | 19 | adantr 486 | . . 3 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 21 | 14, 20 | pm2.61ian 824 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 22 | 1, 21 | eqtr4id 2816 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ≠ wne 2957 Vcvv 3453 ∩ cin 3901 ⊆ wss 3902 ∅c0 4282 〈cop 4593 ‘cfv 6537 (class class class)co 7417 sSet csts 17261 Slot cslot 17279 ndxcnx 17291 Basecbs 17307 ↾s cress 17328 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pr 5402 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-res 5671 df-iota 6493 df-fun 6539 df-fv 6545 df-ov 7420 df-oprab 7421 df-mpo 7422 df-sets 17262 df-slot 17280 df-ress 17329 |
| This theorem is used by: ressplusg 17382 ressmulr 17398 ressstarv 17399 resssca 17434 ressvsca 17435 ressip 17436 resstset 17456 ressle 17471 ressunif 17493 ressds 17501 resshom 17509 ressco 17510 |
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