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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 2763 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 4 | 2, 3 | ressid2 17295 | . . . . . 6 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊) |
| 5 | 4 | fveq2d 6887 | . . . . 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 17296 | . . . . . . 7 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 8 | 7 | fveq2d 6887 | . . . . . 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 17269 | . . . . . 6 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 12 | 8, 11 | eqtr4di 2816 | . . . . 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 17250 | . . . . . . 7 ⊢ ∅ = (𝐸‘∅) |
| 16 | 15 | eqcomi 2772 | . . . . . 6 ⊢ (𝐸‘∅) = ∅ |
| 17 | reldmress 17293 | . . . . . 6 ⊢ Rel dom ↾s | |
| 18 | 16, 2, 17 | oveqprc 17253 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘𝑅)) |
| 19 | 18 | eqcomd 2769 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 20 | 19 | adantr 485 | . . 3 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 21 | 14, 20 | pm2.61ian 823 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 22 | 1, 21 | eqtr4id 2817 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∈ wcel 2143 ≠ wne 2958 Vcvv 3455 ∩ cin 3905 ⊆ wss 3906 ∅c0 4287 〈cop 4596 ‘cfv 6538 (class class class)co 7412 sSet csts 17224 Slot cslot 17242 ndxcnx 17254 Basecbs 17270 ↾s cress 17291 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 ax-un 7734 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3746 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-res 5675 df-iota 6494 df-fun 6540 df-fv 6546 df-ov 7415 df-oprab 7416 df-mpo 7417 df-sets 17225 df-slot 17243 df-ress 17292 |
| This theorem is referenced by: ressplusg 17345 ressmulr 17361 ressstarv 17362 resssca 17397 ressvsca 17398 ressip 17399 resstset 17419 ressle 17434 ressunif 17456 ressds 17464 resshom 17472 ressco 17473 |
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