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Theorem isf32lem8 10384

Description: Lemma for isfin3-2 10391. K sets are subsets of the base. (Contributed by Stefan O'Rear, 6-Nov-2014.)

**Hypotheses**
Ref	Expression
isf32lem.a	⊢ (𝜑 → 𝐹:ω⟶𝒫 𝐺)
isf32lem.b	⊢ (𝜑 → ∀𝑥 ∈ ω (𝐹‘suc 𝑥) ⊆ (𝐹‘𝑥))
isf32lem.c	⊢ (𝜑 → ¬ ∩ ran 𝐹 ∈ ran 𝐹)
isf32lem.d	⊢ 𝑆 = {𝑦 ∈ ω ∣ (𝐹‘suc 𝑦) ⊊ (𝐹‘𝑦)}
isf32lem.e	⊢ 𝐽 = (𝑢 ∈ ω ↦ (℩𝑣 ∈ 𝑆 (𝑣 ∩ 𝑆) ≈ 𝑢))
isf32lem.f	⊢ 𝐾 = ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)

**Assertion**
Ref	Expression
isf32lem8	⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐾‘𝐴) ⊆ 𝐺)

Distinct variable groups: 𝑥,𝑤 𝑣,𝑢,𝑤,𝑥,𝑦,𝜑 𝑤,𝐴,𝑥,𝑦 𝑤,𝐹,𝑥,𝑦 𝑢,𝑆,𝑣,𝑤,𝑥,𝑦 𝑤,𝐽,𝑥,𝑦 𝑥,𝐾,𝑦 Allowed substitution hints: 𝐴(𝑣,𝑢) 𝐹(𝑣,𝑢) 𝐺(𝑥,𝑦,𝑤,𝑣,𝑢) 𝐽(𝑣,𝑢) 𝐾(𝑤,𝑣,𝑢)

**Proof of Theorem isf32lem8**
Step	Hyp	Ref	Expression
1		isf32lem.f	. . . 4 ⊢ 𝐾 = ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)
2	1	fveq1i 6898	. . 3 ⊢ (𝐾‘𝐴) = (((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)‘𝐴)
3		isf32lem.d	. . . . . . . 8 ⊢ 𝑆 = {𝑦 ∈ ω ∣ (𝐹‘suc 𝑦) ⊊ (𝐹‘𝑦)}
4	3	ssrab3 4078	. . . . . . 7 ⊢ 𝑆 ⊆ ω
5		isf32lem.a	. . . . . . . 8 ⊢ (𝜑 → 𝐹:ω⟶𝒫 𝐺)
6		isf32lem.b	. . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ ω (𝐹‘suc 𝑥) ⊆ (𝐹‘𝑥))
7		isf32lem.c	. . . . . . . 8 ⊢ (𝜑 → ¬ ∩ ran 𝐹 ∈ ran 𝐹)
8	5, 6, 7, 3	isf32lem5 10381	. . . . . . 7 ⊢ (𝜑 → ¬ 𝑆 ∈ Fin)
9		isf32lem.e	. . . . . . . 8 ⊢ 𝐽 = (𝑢 ∈ ω ↦ (℩𝑣 ∈ 𝑆 (𝑣 ∩ 𝑆) ≈ 𝑢))
10	9	fin23lem22 10351	. . . . . . 7 ⊢ ((𝑆 ⊆ ω ∧ ¬ 𝑆 ∈ Fin) → 𝐽:ω–1-1-onto→𝑆)
11	4, 8, 10	sylancr 586	. . . . . 6 ⊢ (𝜑 → 𝐽:ω–1-1-onto→𝑆)
12		f1of 6839	. . . . . 6 ⊢ (𝐽:ω–1-1-onto→𝑆 → 𝐽:ω⟶𝑆)
13	11, 12	syl 17	. . . . 5 ⊢ (𝜑 → 𝐽:ω⟶𝑆)
14		fvco3 6997	. . . . 5 ⊢ ((𝐽:ω⟶𝑆 ∧ 𝐴 ∈ ω) → (((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)‘𝐴) = ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)))‘(𝐽‘𝐴)))
15	13, 14	sylan 579	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)‘𝐴) = ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)))‘(𝐽‘𝐴)))
16	13	ffvelcdmda 7094	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐽‘𝐴) ∈ 𝑆)
17		fveq2 6897	. . . . . . 7 ⊢ (𝑤 = (𝐽‘𝐴) → (𝐹‘𝑤) = (𝐹‘(𝐽‘𝐴)))
18		suceq 6435	. . . . . . . 8 ⊢ (𝑤 = (𝐽‘𝐴) → suc 𝑤 = suc (𝐽‘𝐴))
19	18	fveq2d 6901	. . . . . . 7 ⊢ (𝑤 = (𝐽‘𝐴) → (𝐹‘suc 𝑤) = (𝐹‘suc (𝐽‘𝐴)))
20	17, 19	difeq12d 4121	. . . . . 6 ⊢ (𝑤 = (𝐽‘𝐴) → ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)) = ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))))
21		eqid 2728	. . . . . 6 ⊢ (𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) = (𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)))
22		fvex 6910	. . . . . . 7 ⊢ (𝐹‘(𝐽‘𝐴)) ∈ V
23	22	difexi 5330	. . . . . 6 ⊢ ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))) ∈ V
24	20, 21, 23	fvmpt 7005	. . . . 5 ⊢ ((𝐽‘𝐴) ∈ 𝑆 → ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)))‘(𝐽‘𝐴)) = ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))))
25	16, 24	syl 17	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → ((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤)))‘(𝐽‘𝐴)) = ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))))
26	15, 25	eqtrd 2768	. . 3 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (((𝑤 ∈ 𝑆 ↦ ((𝐹‘𝑤) ∖ (𝐹‘suc 𝑤))) ∘ 𝐽)‘𝐴) = ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))))
27	2, 26	eqtrid 2780	. 2 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐾‘𝐴) = ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))))
28	5	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → 𝐹:ω⟶𝒫 𝐺)
29	4, 16	sselid 3978	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐽‘𝐴) ∈ ω)
30	28, 29	ffvelcdmd 7095	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐹‘(𝐽‘𝐴)) ∈ 𝒫 𝐺)
31	30	elpwid 4612	. . 3 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐹‘(𝐽‘𝐴)) ⊆ 𝐺)
32	31	ssdifssd 4141	. 2 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → ((𝐹‘(𝐽‘𝐴)) ∖ (𝐹‘suc (𝐽‘𝐴))) ⊆ 𝐺)
33	27, 32	eqsstrd 4018	1 ⊢ ((𝜑 ∧ 𝐴 ∈ ω) → (𝐾‘𝐴) ⊆ 𝐺)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ∀wral 3058 {crab 3429 ∖ cdif 3944 ∩ cin 3946 ⊆ wss 3947 ⊊ wpss 3948 𝒫 cpw 4603 ∩ cint 4949 class class class wbr 5148 ↦ cmpt 5231 ran crn 5679 ∘ ccom 5682 suc csuc 6371 ⟶wf 6544 –1-1-onto→wf1o 6547 ‘cfv 6548 ℩crio 7375 ωcom 7870 ≈ cen 8961 Fincfn 8964

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-int 4950 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-se 5634 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-isom 6557 df-riota 7376 df-ov 7423 df-om 7871 df-2nd 7994 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-1o 8487 df-er 8725 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-card 9963

This theorem is referenced by: isf32lem9 10385

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