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Theorem mrcuni 17493
Description: Idempotence of closure under a general union. (Contributed by Stefan O'Rear, 31-Jan-2015.)
Hypothesis
Ref Expression
mrcfval.f 𝐹 = (mrCls‘𝐶)
Assertion
Ref Expression
mrcuni ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 𝑈) = (𝐹 (𝐹𝑈)))

Proof of Theorem mrcuni
Dummy variables 𝑥 𝑠 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simpl 483 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → 𝐶 ∈ (Moore‘𝑋))
2 simpll 765 . . . . . . 7 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → 𝐶 ∈ (Moore‘𝑋))
3 ssel2 3937 . . . . . . . . 9 ((𝑈 ⊆ 𝒫 𝑋𝑠𝑈) → 𝑠 ∈ 𝒫 𝑋)
43elpwid 4567 . . . . . . . 8 ((𝑈 ⊆ 𝒫 𝑋𝑠𝑈) → 𝑠𝑋)
54adantll 712 . . . . . . 7 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → 𝑠𝑋)
6 mrcfval.f . . . . . . . 8 𝐹 = (mrCls‘𝐶)
76mrcssid 17489 . . . . . . 7 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑠𝑋) → 𝑠 ⊆ (𝐹𝑠))
82, 5, 7syl2anc 584 . . . . . 6 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → 𝑠 ⊆ (𝐹𝑠))
96mrcf 17481 . . . . . . . . . . 11 (𝐶 ∈ (Moore‘𝑋) → 𝐹:𝒫 𝑋𝐶)
109ffund 6669 . . . . . . . . . 10 (𝐶 ∈ (Moore‘𝑋) → Fun 𝐹)
1110adantr 481 . . . . . . . . 9 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → Fun 𝐹)
129fdmd 6676 . . . . . . . . . . 11 (𝐶 ∈ (Moore‘𝑋) → dom 𝐹 = 𝒫 𝑋)
1312sseq2d 3974 . . . . . . . . . 10 (𝐶 ∈ (Moore‘𝑋) → (𝑈 ⊆ dom 𝐹𝑈 ⊆ 𝒫 𝑋))
1413biimpar 478 . . . . . . . . 9 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → 𝑈 ⊆ dom 𝐹)
15 funfvima2 7177 . . . . . . . . 9 ((Fun 𝐹𝑈 ⊆ dom 𝐹) → (𝑠𝑈 → (𝐹𝑠) ∈ (𝐹𝑈)))
1611, 14, 15syl2anc 584 . . . . . . . 8 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝑠𝑈 → (𝐹𝑠) ∈ (𝐹𝑈)))
1716imp 407 . . . . . . 7 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → (𝐹𝑠) ∈ (𝐹𝑈))
18 elssuni 4896 . . . . . . 7 ((𝐹𝑠) ∈ (𝐹𝑈) → (𝐹𝑠) ⊆ (𝐹𝑈))
1917, 18syl 17 . . . . . 6 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → (𝐹𝑠) ⊆ (𝐹𝑈))
208, 19sstrd 3952 . . . . 5 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑠𝑈) → 𝑠 (𝐹𝑈))
2120ralrimiva 3141 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → ∀𝑠𝑈 𝑠 (𝐹𝑈))
22 unissb 4898 . . . 4 ( 𝑈 (𝐹𝑈) ↔ ∀𝑠𝑈 𝑠 (𝐹𝑈))
2321, 22sylibr 233 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → 𝑈 (𝐹𝑈))
246mrcssv 17486 . . . . . . 7 (𝐶 ∈ (Moore‘𝑋) → (𝐹𝑥) ⊆ 𝑋)
2524adantr 481 . . . . . 6 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹𝑥) ⊆ 𝑋)
2625ralrimivw 3145 . . . . 5 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → ∀𝑥𝑈 (𝐹𝑥) ⊆ 𝑋)
279ffnd 6666 . . . . . 6 (𝐶 ∈ (Moore‘𝑋) → 𝐹 Fn 𝒫 𝑋)
28 sseq1 3967 . . . . . . 7 (𝑠 = (𝐹𝑥) → (𝑠𝑋 ↔ (𝐹𝑥) ⊆ 𝑋))
2928ralima 7184 . . . . . 6 ((𝐹 Fn 𝒫 𝑋𝑈 ⊆ 𝒫 𝑋) → (∀𝑠 ∈ (𝐹𝑈)𝑠𝑋 ↔ ∀𝑥𝑈 (𝐹𝑥) ⊆ 𝑋))
3027, 29sylan 580 . . . . 5 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (∀𝑠 ∈ (𝐹𝑈)𝑠𝑋 ↔ ∀𝑥𝑈 (𝐹𝑥) ⊆ 𝑋))
3126, 30mpbird 256 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → ∀𝑠 ∈ (𝐹𝑈)𝑠𝑋)
32 unissb 4898 . . . 4 ( (𝐹𝑈) ⊆ 𝑋 ↔ ∀𝑠 ∈ (𝐹𝑈)𝑠𝑋)
3331, 32sylibr 233 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹𝑈) ⊆ 𝑋)
346mrcss 17488 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 (𝐹𝑈) ∧ (𝐹𝑈) ⊆ 𝑋) → (𝐹 𝑈) ⊆ (𝐹 (𝐹𝑈)))
351, 23, 33, 34syl3anc 1371 . 2 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 𝑈) ⊆ (𝐹 (𝐹𝑈)))
36 simpll 765 . . . . . . . 8 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑥𝑈) → 𝐶 ∈ (Moore‘𝑋))
37 elssuni 4896 . . . . . . . . 9 (𝑥𝑈𝑥 𝑈)
3837adantl 482 . . . . . . . 8 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑥𝑈) → 𝑥 𝑈)
39 sspwuni 5058 . . . . . . . . . . 11 (𝑈 ⊆ 𝒫 𝑋 𝑈𝑋)
4039biimpi 215 . . . . . . . . . 10 (𝑈 ⊆ 𝒫 𝑋 𝑈𝑋)
4140adantl 482 . . . . . . . . 9 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → 𝑈𝑋)
4241adantr 481 . . . . . . . 8 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑥𝑈) → 𝑈𝑋)
436mrcss 17488 . . . . . . . 8 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑥 𝑈 𝑈𝑋) → (𝐹𝑥) ⊆ (𝐹 𝑈))
4436, 38, 42, 43syl3anc 1371 . . . . . . 7 (((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) ∧ 𝑥𝑈) → (𝐹𝑥) ⊆ (𝐹 𝑈))
4544ralrimiva 3141 . . . . . 6 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → ∀𝑥𝑈 (𝐹𝑥) ⊆ (𝐹 𝑈))
46 sseq1 3967 . . . . . . . 8 (𝑠 = (𝐹𝑥) → (𝑠 ⊆ (𝐹 𝑈) ↔ (𝐹𝑥) ⊆ (𝐹 𝑈)))
4746ralima 7184 . . . . . . 7 ((𝐹 Fn 𝒫 𝑋𝑈 ⊆ 𝒫 𝑋) → (∀𝑠 ∈ (𝐹𝑈)𝑠 ⊆ (𝐹 𝑈) ↔ ∀𝑥𝑈 (𝐹𝑥) ⊆ (𝐹 𝑈)))
4827, 47sylan 580 . . . . . 6 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (∀𝑠 ∈ (𝐹𝑈)𝑠 ⊆ (𝐹 𝑈) ↔ ∀𝑥𝑈 (𝐹𝑥) ⊆ (𝐹 𝑈)))
4945, 48mpbird 256 . . . . 5 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → ∀𝑠 ∈ (𝐹𝑈)𝑠 ⊆ (𝐹 𝑈))
50 unissb 4898 . . . . 5 ( (𝐹𝑈) ⊆ (𝐹 𝑈) ↔ ∀𝑠 ∈ (𝐹𝑈)𝑠 ⊆ (𝐹 𝑈))
5149, 50sylibr 233 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹𝑈) ⊆ (𝐹 𝑈))
526mrcssv 17486 . . . . 5 (𝐶 ∈ (Moore‘𝑋) → (𝐹 𝑈) ⊆ 𝑋)
5352adantr 481 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 𝑈) ⊆ 𝑋)
546mrcss 17488 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ (𝐹𝑈) ⊆ (𝐹 𝑈) ∧ (𝐹 𝑈) ⊆ 𝑋) → (𝐹 (𝐹𝑈)) ⊆ (𝐹‘(𝐹 𝑈)))
551, 51, 53, 54syl3anc 1371 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 (𝐹𝑈)) ⊆ (𝐹‘(𝐹 𝑈)))
566mrcidm 17491 . . . 4 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈𝑋) → (𝐹‘(𝐹 𝑈)) = (𝐹 𝑈))
571, 41, 56syl2anc 584 . . 3 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹‘(𝐹 𝑈)) = (𝐹 𝑈))
5855, 57sseqtrd 3982 . 2 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 (𝐹𝑈)) ⊆ (𝐹 𝑈))
5935, 58eqssd 3959 1 ((𝐶 ∈ (Moore‘𝑋) ∧ 𝑈 ⊆ 𝒫 𝑋) → (𝐹 𝑈) = (𝐹 (𝐹𝑈)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396   = wceq 1541  wcel 2106  wral 3062  wss 3908  𝒫 cpw 4558   cuni 4863  dom cdm 5631  cima 5634  Fun wfun 6487   Fn wfn 6488  cfv 6493  Moorecmre 17454  mrClscmrc 17455
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2707  ax-sep 5254  ax-nul 5261  ax-pow 5318  ax-pr 5382  ax-un 7668
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2538  df-eu 2567  df-clab 2714  df-cleq 2728  df-clel 2814  df-nfc 2887  df-ne 2942  df-ral 3063  df-rex 3072  df-rab 3406  df-v 3445  df-sbc 3738  df-csb 3854  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4281  df-if 4485  df-pw 4560  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4864  df-int 4906  df-br 5104  df-opab 5166  df-mpt 5187  df-id 5529  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6445  df-fun 6495  df-fn 6496  df-f 6497  df-fv 6501  df-mre 17458  df-mrc 17459
This theorem is referenced by:  mrcun  17494  isacs4lem  18425
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