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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 2741 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 4 | 2, 3 | ressid2 17199 | . . . . . 6 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊) |
| 5 | 4 | fveq2d 6835 | . . . . 5 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 6 | 5 | 3expib 1129 | . . . 4 ⊢ ((Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))) |
| 7 | 2, 3 | ressval2 17200 | . . . . . . 7 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 8 | 7 | fveq2d 6835 | . . . . . 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 17173 | . . . . . 6 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) |
| 12 | 8, 11 | eqtr4di 2794 | . . . . 5 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 13 | 12 | 3expib 1129 | . . . 4 ⊢ (¬ (Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))) |
| 14 | 6, 13 | pm2.61i 183 | . . 3 ⊢ ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 15 | 9 | str0 17154 | . . . . . . 7 ⊢ ∅ = (𝐸‘∅) |
| 16 | 15 | eqcomi 2750 | . . . . . 6 ⊢ (𝐸‘∅) = ∅ |
| 17 | reldmress 17197 | . . . . . 6 ⊢ Rel dom ↾s | |
| 18 | 16, 2, 17 | oveqprc 17157 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘𝑅)) |
| 19 | 18 | eqcomd 2747 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 20 | 19 | adantr 482 | . . 3 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 21 | 14, 20 | pm2.61ian 818 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐸‘𝑅) = (𝐸‘𝑊)) |
| 22 | 1, 21 | eqtr4id 2795 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 ≠ wne 2936 Vcvv 3433 ∩ cin 3884 ⊆ wss 3885 ∅c0 4264 〈cop 4564 ‘cfv 6489 (class class class)co 7360 sSet csts 17128 Slot cslot 17146 ndxcnx 17158 Basecbs 17174 ↾s cress 17195 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pr 5365 ax-un 7682 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-sbc 3726 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-res 5633 df-iota 6445 df-fun 6491 df-fv 6497 df-ov 7363 df-oprab 7364 df-mpo 7365 df-sets 17129 df-slot 17147 df-ress 17196 |
| This theorem is referenced by: ressplusg 17249 ressmulr 17265 ressstarv 17266 resssca 17301 ressvsca 17302 ressip 17303 resstset 17323 ressle 17338 ressunif 17360 ressds 17368 resshom 17376 ressco 17377 |
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