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| Mirrors > Home > MPE Home > Th. List > ressbas | Structured version Visualization version GIF version | ||
| Description: Base set of a structure restriction. (Contributed by Stefan O'Rear, 26-Nov-2014.) (Proof shortened by AV, 7-Nov-2024.) |
| Ref | Expression |
|---|---|
| ressbas.r | ⊢ 𝑅 = (𝑊 ↾s 𝐴) |
| ressbas.b | ⊢ 𝐵 = (Base‘𝑊) |
| Ref | Expression |
|---|---|
| ressbas | ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressbas.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑊) | |
| 2 | simp1 1136 | . . . . . 6 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝐵 ⊆ 𝐴) | |
| 3 | sseqin2 4175 | . . . . . 6 ⊢ (𝐵 ⊆ 𝐴 ↔ (𝐴 ∩ 𝐵) = 𝐵) | |
| 4 | 2, 3 | sylib 218 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = 𝐵) |
| 5 | ressbas.r | . . . . . . 7 ⊢ 𝑅 = (𝑊 ↾s 𝐴) | |
| 6 | 5, 1 | ressid2 17161 | . . . . . 6 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊) |
| 7 | 6 | fveq2d 6838 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (Base‘𝑅) = (Base‘𝑊)) |
| 8 | 1, 4, 7 | 3eqtr4a 2797 | . . . 4 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| 9 | 8 | 3expib 1122 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅))) |
| 10 | simp2 1137 | . . . . . 6 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑊 ∈ V) | |
| 11 | 1 | fvexi 6848 | . . . . . . 7 ⊢ 𝐵 ∈ V |
| 12 | 11 | inex2 5263 | . . . . . 6 ⊢ (𝐴 ∩ 𝐵) ∈ V |
| 13 | baseid 17139 | . . . . . . 7 ⊢ Base = Slot (Base‘ndx) | |
| 14 | 13 | setsid 17134 | . . . . . 6 ⊢ ((𝑊 ∈ V ∧ (𝐴 ∩ 𝐵) ∈ V) → (𝐴 ∩ 𝐵) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
| 15 | 10, 12, 14 | sylancl 586 | . . . . 5 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
| 16 | 5, 1 | ressval2 17162 | . . . . . 6 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉)) |
| 17 | 16 | fveq2d 6838 | . . . . 5 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (Base‘𝑅) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
| 18 | 15, 17 | eqtr4d 2774 | . . . 4 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| 19 | 18 | 3expib 1122 | . . 3 ⊢ (¬ 𝐵 ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅))) |
| 20 | 9, 19 | pm2.61i 182 | . 2 ⊢ ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| 21 | in0 4347 | . . . . 5 ⊢ (𝐴 ∩ ∅) = ∅ | |
| 22 | fvprc 6826 | . . . . . . 7 ⊢ (¬ 𝑊 ∈ V → (Base‘𝑊) = ∅) | |
| 23 | 1, 22 | eqtrid 2783 | . . . . . 6 ⊢ (¬ 𝑊 ∈ V → 𝐵 = ∅) |
| 24 | 23 | ineq2d 4172 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → (𝐴 ∩ 𝐵) = (𝐴 ∩ ∅)) |
| 25 | 21, 24, 22 | 3eqtr4a 2797 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐴 ∩ 𝐵) = (Base‘𝑊)) |
| 26 | base0 17141 | . . . . . 6 ⊢ ∅ = (Base‘∅) | |
| 27 | 26 | eqcomi 2745 | . . . . 5 ⊢ (Base‘∅) = ∅ |
| 28 | reldmress 17159 | . . . . 5 ⊢ Rel dom ↾s | |
| 29 | 27, 5, 28 | oveqprc 17119 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (Base‘𝑊) = (Base‘𝑅)) |
| 30 | 25, 29 | eqtrd 2771 | . . 3 ⊢ (¬ 𝑊 ∈ V → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| 31 | 30 | adantr 480 | . 2 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| 32 | 20, 31 | pm2.61ian 811 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 Vcvv 3440 ∩ cin 3900 ⊆ wss 3901 ∅c0 4285 〈cop 4586 ‘cfv 6492 (class class class)co 7358 sSet csts 17090 ndxcnx 17120 Basecbs 17136 ↾s cress 17157 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-1cn 11084 ax-addcl 11086 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-nn 12146 df-sets 17091 df-slot 17109 df-ndx 17121 df-base 17137 df-ress 17158 |
| This theorem is referenced by: ressbasssg 17164 ressbas2 17165 ressbasssOLD 17167 ressress 17174 xrge0base 17528 rescabs 17757 resscatc 18033 resspos 18352 resstos 18353 idresefmnd 18824 smndex1bas 18831 resscntz 19262 idrespermg 19340 submomnd 20061 opprsubg 20288 subrngpropd 20501 subrgpropd 20541 suborng 20809 sralmod 21139 lidlssbas 21168 lidlbas 21169 resstopn 23130 resstps 23131 ressuss 24206 ressxms 24469 ressms 24470 cphsubrglem 25133 cphsscph 25207 xrge00 33096 gsumge0cl 46615 sge0tsms 46624 uzlidlring 48481 dmatALTbas 48647 |
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