| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > wunress | Structured version Visualization version GIF version | ||
| Description: Closure of structure restriction in a weak universe. (Contributed by Mario Carneiro, 12-Jan-2017.) (Proof shortened by AV, 28-Oct-2024.) |
| Ref | Expression |
|---|---|
| wunress.1 | ⊢ (𝜑 → 𝑈 ∈ WUni) |
| wunress.2 | ⊢ (𝜑 → ω ∈ 𝑈) |
| wunress.3 | ⊢ (𝜑 → 𝑊 ∈ 𝑈) |
| Ref | Expression |
|---|---|
| wunress | ⊢ (𝜑 → (𝑊 ↾s 𝐴) ∈ 𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wunress.3 | . . . . 5 ⊢ (𝜑 → 𝑊 ∈ 𝑈) | |
| 2 | eqid 2761 | . . . . . 6 ⊢ (𝑊 ↾s 𝐴) = (𝑊 ↾s 𝐴) | |
| 3 | eqid 2761 | . . . . . 6 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 4 | 2, 3 | ressval 17411 | . . . . 5 ⊢ ((𝑊 ∈ 𝑈 ∧ 𝐴 ∈ V) → (𝑊 ↾s 𝐴) = if((Base‘𝑊) ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉))) |
| 5 | 1, 4 | sylan 592 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 ∈ V) → (𝑊 ↾s 𝐴) = if((Base‘𝑊) ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉))) |
| 6 | wunress.1 | . . . . . . 7 ⊢ (𝜑 → 𝑈 ∈ WUni) | |
| 7 | wunress.2 | . . . . . . . . 9 ⊢ (𝜑 → ω ∈ 𝑈) | |
| 8 | 6, 7 | basndxelwund 17398 | . . . . . . . 8 ⊢ (𝜑 → (Base‘ndx) ∈ 𝑈) |
| 9 | incom 4155 | . . . . . . . . 9 ⊢ (𝐴 ∩ (Base‘𝑊)) = ((Base‘𝑊) ∩ 𝐴) | |
| 10 | baseid 17390 | . . . . . . . . . . 11 ⊢ Base = Slot (Base‘ndx) | |
| 11 | 10, 6, 1 | wunstr 17366 | . . . . . . . . . 10 ⊢ (𝜑 → (Base‘𝑊) ∈ 𝑈) |
| 12 | 6, 11 | wunin 10798 | . . . . . . . . 9 ⊢ (𝜑 → ((Base‘𝑊) ∩ 𝐴) ∈ 𝑈) |
| 13 | 9, 12 | eqeltrid 2865 | . . . . . . . 8 ⊢ (𝜑 → (𝐴 ∩ (Base‘𝑊)) ∈ 𝑈) |
| 14 | 6, 8, 13 | wunop 10807 | . . . . . . 7 ⊢ (𝜑 → 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉 ∈ 𝑈) |
| 15 | 6, 1, 14 | wunsets 17355 | . . . . . 6 ⊢ (𝜑 → (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉) ∈ 𝑈) |
| 16 | 1, 15 | ifcld 4529 | . . . . 5 ⊢ (𝜑 → if((Base‘𝑊) ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) ∈ 𝑈) |
| 17 | 16 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 ∈ V) → if((Base‘𝑊) ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Base‘ndx), (𝐴 ∩ (Base‘𝑊))〉)) ∈ 𝑈) |
| 18 | 5, 17 | eqeltrd 2861 | . . 3 ⊢ ((𝜑 ∧ 𝐴 ∈ V) → (𝑊 ↾s 𝐴) ∈ 𝑈) |
| 19 | 18 | ex 418 | . 2 ⊢ (𝜑 → (𝐴 ∈ V → (𝑊 ↾s 𝐴) ∈ 𝑈)) |
| 20 | 6 | wun0 10803 | . . 3 ⊢ (𝜑 → ∅ ∈ 𝑈) |
| 21 | reldmress 17410 | . . . . 5 ⊢ Rel dom ↾s | |
| 22 | 21 | ovprc2 7460 | . . . 4 ⊢ (¬ 𝐴 ∈ V → (𝑊 ↾s 𝐴) = ∅) |
| 23 | 22 | eleq1d 2846 | . . 3 ⊢ (¬ 𝐴 ∈ V → ((𝑊 ↾s 𝐴) ∈ 𝑈 ↔ ∅ ∈ 𝑈)) |
| 24 | 20, 23 | syl5ibrcom 250 | . 2 ⊢ (𝜑 → (¬ 𝐴 ∈ V → (𝑊 ↾s 𝐴) ∈ 𝑈)) |
| 25 | 19, 24 | pm2.61d 181 | 1 ⊢ (𝜑 → (𝑊 ↾s 𝐴) ∈ 𝑈) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 Vcvv 3451 ∩ cin 3898 ⊆ wss 3899 ∅c0 4279 ifcif 4482 〈cop 4590 ‘cfv 6538 (class class class)co 7420 ωcom 7877 WUnicwun 10785 sSet csts 17341 ndxcnx 17371 Basecbs 17387 ↾s cress 17408 |
| 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 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-inf2 9642 ax-cnex 11256 ax-1cn 11258 ax-addcl 11260 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-oadd 8480 df-omul 8481 df-er 8717 df-ec 8719 df-qs 8723 df-map 8849 df-pm 8850 df-wun 10787 df-ni 10957 df-pli 10958 df-mi 10959 df-lti 10960 df-plpq 10993 df-mpq 10994 df-ltpq 10995 df-enq 10996 df-nq 10997 df-erq 10998 df-plq 10999 df-mq 11000 df-1nq 11001 df-rq 11002 df-ltnq 11003 df-np 11066 df-plp 11068 df-ltp 11070 df-enr 11140 df-nr 11141 df-c 11206 df-nn 12336 df-sets 17342 df-slot 17360 df-ndx 17372 df-base 17388 df-ress 17409 |
| This theorem is used by: (None) |
| Copyright terms: Public domain | W3C validator |