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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.) |
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 1132 | . . . . . 6 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝐵 ⊆ 𝐴) | |
3 | sseqin2 4192 | . . . . . 6 ⊢ (𝐵 ⊆ 𝐴 ↔ (𝐴 ∩ 𝐵) = 𝐵) | |
4 | 2, 3 | sylib 220 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = 𝐵) |
5 | ressbas.r | . . . . . . 7 ⊢ 𝑅 = (𝑊 ↾s 𝐴) | |
6 | 5, 1 | ressid2 16552 | . . . . . 6 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊) |
7 | 6 | fveq2d 6674 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (Base‘𝑅) = (Base‘𝑊)) |
8 | 1, 4, 7 | 3eqtr4a 2882 | . . . 4 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
9 | 8 | 3expib 1118 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅))) |
10 | simp2 1133 | . . . . . 6 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑊 ∈ V) | |
11 | 1 | fvexi 6684 | . . . . . . 7 ⊢ 𝐵 ∈ V |
12 | 11 | inex2 5222 | . . . . . 6 ⊢ (𝐴 ∩ 𝐵) ∈ V |
13 | baseid 16543 | . . . . . . 7 ⊢ Base = Slot (Base‘ndx) | |
14 | 13 | setsid 16538 | . . . . . 6 ⊢ ((𝑊 ∈ V ∧ (𝐴 ∩ 𝐵) ∈ V) → (𝐴 ∩ 𝐵) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
15 | 10, 12, 14 | sylancl 588 | . . . . 5 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
16 | 5, 1 | ressval2 16553 | . . . . . 6 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉)) |
17 | 16 | fveq2d 6674 | . . . . 5 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (Base‘𝑅) = (Base‘(𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ 𝐵)〉))) |
18 | 15, 17 | eqtr4d 2859 | . . . 4 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
19 | 18 | 3expib 1118 | . . 3 ⊢ (¬ 𝐵 ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅))) |
20 | 9, 19 | pm2.61i 184 | . 2 ⊢ ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
21 | 0fv 6709 | . . . . 5 ⊢ (∅‘(Base‘ndx)) = ∅ | |
22 | 0ex 5211 | . . . . . 6 ⊢ ∅ ∈ V | |
23 | 22, 13 | strfvn 16505 | . . . . 5 ⊢ (Base‘∅) = (∅‘(Base‘ndx)) |
24 | in0 4345 | . . . . 5 ⊢ (𝐴 ∩ ∅) = ∅ | |
25 | 21, 23, 24 | 3eqtr4ri 2855 | . . . 4 ⊢ (𝐴 ∩ ∅) = (Base‘∅) |
26 | fvprc 6663 | . . . . . 6 ⊢ (¬ 𝑊 ∈ V → (Base‘𝑊) = ∅) | |
27 | 1, 26 | syl5eq 2868 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → 𝐵 = ∅) |
28 | 27 | ineq2d 4189 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐴 ∩ 𝐵) = (𝐴 ∩ ∅)) |
29 | reldmress 16550 | . . . . . . 7 ⊢ Rel dom ↾s | |
30 | 29 | ovprc1 7195 | . . . . . 6 ⊢ (¬ 𝑊 ∈ V → (𝑊 ↾s 𝐴) = ∅) |
31 | 5, 30 | syl5eq 2868 | . . . . 5 ⊢ (¬ 𝑊 ∈ V → 𝑅 = ∅) |
32 | 31 | fveq2d 6674 | . . . 4 ⊢ (¬ 𝑊 ∈ V → (Base‘𝑅) = (Base‘∅)) |
33 | 25, 28, 32 | 3eqtr4a 2882 | . . 3 ⊢ (¬ 𝑊 ∈ V → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
34 | 33 | adantr 483 | . 2 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
35 | 20, 34 | pm2.61ian 810 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∩ 𝐵) = (Base‘𝑅)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 398 ∧ w3a 1083 = wceq 1537 ∈ wcel 2114 Vcvv 3494 ∩ cin 3935 ⊆ wss 3936 ∅c0 4291 〈cop 4573 ‘cfv 6355 (class class class)co 7156 ndxcnx 16480 sSet csts 16481 Basecbs 16483 ↾s cress 16484 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-1cn 10595 ax-addcl 10597 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-nn 11639 df-ndx 16486 df-slot 16487 df-base 16489 df-sets 16490 df-ress 16491 |
This theorem is referenced by: ressbas2 16555 ressbasss 16556 ressress 16562 rescabs 17103 resscatc 17365 idresefmnd 18064 smndex1bas 18071 resscntz 18462 idrespermg 18539 opprsubg 19386 subrgpropd 19570 sralmod 19959 resstopn 21794 resstps 21795 ressuss 22872 ressxms 23135 ressms 23136 cphsubrglem 23781 cphsscph 23854 resspos 30646 resstos 30647 xrge0base 30672 xrge00 30673 submomnd 30711 suborng 30888 gsumge0cl 42702 sge0tsms 42711 lidlssbas 44242 lidlbas 44243 uzlidlring 44249 dmatALTbas 44505 |
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