Theorem pwfseqlem4 9484

Description: Lemma for pwfseq 9486. Derive a final contradiction from the function 𝐹 in pwfseqlem3 9482. Applying fpwwe2 9465 to it, we get a certain maximal well-ordered subset 𝑍, but the defining property (𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍 contradicts our assumption on 𝐹, so we are reduced to the case of 𝑍 finite. This too is a contradiction, though, because 𝑍 and its preimage under (𝑊‘𝑍) are distinct sets of the same cardinality and in a subset relation, which is impossible for finite sets. (Contributed by Mario Carneiro, 31-May-2015.)

Hypotheses

Ref	Expression
pwfseqlem4.g	⊢ (𝜑 → 𝐺:𝒫 𝐴–1-1→∪ 𝑛 ∈ ω (𝐴 ↑𝑚 𝑛))
pwfseqlem4.x	⊢ (𝜑 → 𝑋 ⊆ 𝐴)
pwfseqlem4.h	⊢ (𝜑 → 𝐻:ω–1-1-onto→𝑋)
pwfseqlem4.ps	⊢ (𝜓 ↔ ((𝑥 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑥 × 𝑥) ∧ 𝑟 We 𝑥) ∧ ω ≼ 𝑥))
pwfseqlem4.k	⊢ ((𝜑 ∧ 𝜓) → 𝐾:∪ 𝑛 ∈ ω (𝑥 ↑𝑚 𝑛)–1-1→𝑥)
pwfseqlem4.d	⊢ 𝐷 = (𝐺‘{𝑤 ∈ 𝑥 ∣ ((◡𝐾‘𝑤) ∈ ran 𝐺 ∧ ¬ 𝑤 ∈ (◡𝐺‘(◡𝐾‘𝑤)))})
pwfseqlem4.f	⊢ 𝐹 = (𝑥 ∈ V, 𝑟 ∈ V ↦ if(𝑥 ∈ Fin, (𝐻‘(card‘𝑥)), (𝐷‘∩ {𝑧 ∈ ω ∣ ¬ (𝐷‘𝑧) ∈ 𝑥})))
pwfseqlem4.w	⊢ 𝑊 = {⟨𝑎, 𝑠⟩ ∣ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎)) ∧ (𝑠 We 𝑎 ∧ ∀𝑏 ∈ 𝑎 [(◡𝑠 “ {𝑏}) / 𝑣](𝑣𝐹(𝑠 ∩ (𝑣 × 𝑣))) = 𝑏))}
pwfseqlem4.z	⊢ 𝑍 = ∪ dom 𝑊

Assertion

Ref	Expression
pwfseqlem4	⊢ ¬ 𝜑

Distinct variable groups:   𝑛,𝑟,𝑤,𝑥,𝑧   𝐷,𝑛,𝑧   𝑎,𝑏,𝑠,𝑣,𝐹   𝑤,𝐺   𝑤,𝐾   𝑟,𝑎,𝑥,𝑧,𝐻,𝑏,𝑠,𝑣   𝑛,𝑎,𝜑,𝑏,𝑠,𝑣,𝑟,𝑥,𝑧   𝜓,𝑛,𝑧   𝐴,𝑎,𝑛,𝑟,𝑠,𝑥,𝑧   𝑊,𝑎,𝑏,𝑠,𝑣   𝑍,𝑎,𝑏,𝑠,𝑣

Allowed substitution hints:   𝜑(𝑤)   𝜓(𝑥,𝑤,𝑣,𝑠,𝑟,𝑎,𝑏)   𝐴(𝑤,𝑣,𝑏)   𝐷(𝑥,𝑤,𝑣,𝑠,𝑟,𝑎,𝑏)   𝐹(𝑥,𝑧,𝑤,𝑛,𝑟)   𝐺(𝑥,𝑧,𝑣,𝑛,𝑠,𝑟,𝑎,𝑏)   𝐻(𝑤,𝑛)   𝐾(𝑥,𝑧,𝑣,𝑛,𝑠,𝑟,𝑎,𝑏)   𝑊(𝑥,𝑧,𝑤,𝑛,𝑟)   𝑋(𝑥,𝑧,𝑤,𝑣,𝑛,𝑠,𝑟,𝑎,𝑏)   𝑍(𝑥,𝑧,𝑤,𝑛,𝑟)

Proof of Theorem pwfseqlem4

Step	Hyp	Ref	Expression
1		eqid 2622	. . . . . . . . . . 11 ⊢ 𝑍 = 𝑍
2		eqid 2622	. . . . . . . . . . 11 ⊢ (𝑊‘𝑍) = (𝑊‘𝑍)
3	1, 2	pm3.2i 471	. . . . . . . . . 10 ⊢ (𝑍 = 𝑍 ∧ (𝑊‘𝑍) = (𝑊‘𝑍))
4		pwfseqlem4.w	. . . . . . . . . . 11 ⊢ 𝑊 = {⟨𝑎, 𝑠⟩ ∣ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎)) ∧ (𝑠 We 𝑎 ∧ ∀𝑏 ∈ 𝑎 [(◡𝑠 “ {𝑏}) / 𝑣](𝑣𝐹(𝑠 ∩ (𝑣 × 𝑣))) = 𝑏))}
5		pwfseqlem4.g	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐺:𝒫 𝐴–1-1→∪ 𝑛 ∈ ω (𝐴 ↑𝑚 𝑛))
6		omex 8540	. . . . . . . . . . . . . 14 ⊢ ω ∈ V
7		ovex 6678	. . . . . . . . . . . . . 14 ⊢ (𝐴 ↑𝑚 𝑛) ∈ V
8	6, 7	iunex 7147	. . . . . . . . . . . . 13 ⊢ ∪ 𝑛 ∈ ω (𝐴 ↑𝑚 𝑛) ∈ V
9		f1dmex 7136	. . . . . . . . . . . . 13 ⊢ ((𝐺:𝒫 𝐴–1-1→∪ 𝑛 ∈ ω (𝐴 ↑𝑚 𝑛) ∧ ∪ 𝑛 ∈ ω (𝐴 ↑𝑚 𝑛) ∈ V) → 𝒫 𝐴 ∈ V)
10	5, 8, 9	sylancl 694	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝒫 𝐴 ∈ V)
11		pwexb 6975	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ V ↔ 𝒫 𝐴 ∈ V)
12	10, 11	sylibr 224	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ∈ V)
13		pwfseqlem4.x	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑋 ⊆ 𝐴)
14		pwfseqlem4.h	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐻:ω–1-1-onto→𝑋)
15		pwfseqlem4.ps	. . . . . . . . . . . 12 ⊢ (𝜓 ↔ ((𝑥 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑥 × 𝑥) ∧ 𝑟 We 𝑥) ∧ ω ≼ 𝑥))
16		pwfseqlem4.k	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝜓) → 𝐾:∪ 𝑛 ∈ ω (𝑥 ↑𝑚 𝑛)–1-1→𝑥)
17		pwfseqlem4.d	. . . . . . . . . . . 12 ⊢ 𝐷 = (𝐺‘{𝑤 ∈ 𝑥 ∣ ((◡𝐾‘𝑤) ∈ ran 𝐺 ∧ ¬ 𝑤 ∈ (◡𝐺‘(◡𝐾‘𝑤)))})
18		pwfseqlem4.f	. . . . . . . . . . . 12 ⊢ 𝐹 = (𝑥 ∈ V, 𝑟 ∈ V ↦ if(𝑥 ∈ Fin, (𝐻‘(card‘𝑥)), (𝐷‘∩ {𝑧 ∈ ω ∣ ¬ (𝐷‘𝑧) ∈ 𝑥})))
19	5, 13, 14, 15, 16, 17, 18	pwfseqlem4a 9483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → (𝑎𝐹𝑠) ∈ 𝐴)
20		pwfseqlem4.z	. . . . . . . . . . 11 ⊢ 𝑍 = ∪ dom 𝑊
21	4, 12, 19, 20	fpwwe2 9465	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑍𝑊(𝑊‘𝑍) ∧ (𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍) ↔ (𝑍 = 𝑍 ∧ (𝑊‘𝑍) = (𝑊‘𝑍))))
22	3, 21	mpbiri 248	. . . . . . . . 9 ⊢ (𝜑 → (𝑍𝑊(𝑊‘𝑍) ∧ (𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍))
23	22	simprd 479	. . . . . . . 8 ⊢ (𝜑 → (𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍)
24	22	simpld 475	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑍𝑊(𝑊‘𝑍))
25	4, 12	fpwwe2lem2 9454	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑍𝑊(𝑊‘𝑍) ↔ ((𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)) ∧ ((𝑊‘𝑍) We 𝑍 ∧ ∀𝑏 ∈ 𝑍 [(◡(𝑊‘𝑍) “ {𝑏}) / 𝑣](𝑣𝐹((𝑊‘𝑍) ∩ (𝑣 × 𝑣))) = 𝑏))))
26	24, 25	mpbid 222	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)) ∧ ((𝑊‘𝑍) We 𝑍 ∧ ∀𝑏 ∈ 𝑍 [(◡(𝑊‘𝑍) “ {𝑏}) / 𝑣](𝑣𝐹((𝑊‘𝑍) ∩ (𝑣 × 𝑣))) = 𝑏)))
27	26	simpld 475	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)))
28	27	simpld 475	. . . . . . . . . 10 ⊢ (𝜑 → 𝑍 ⊆ 𝐴)
29	12, 28	ssexd 4805	. . . . . . . . 9 ⊢ (𝜑 → 𝑍 ∈ V)
30		sseq1 3626	. . . . . . . . . . . . . 14 ⊢ (𝑎 = 𝑍 → (𝑎 ⊆ 𝐴 ↔ 𝑍 ⊆ 𝐴))
31		id 22	. . . . . . . . . . . . . . . 16 ⊢ (𝑎 = 𝑍 → 𝑎 = 𝑍)
32	31	sqxpeqd 5141	. . . . . . . . . . . . . . 15 ⊢ (𝑎 = 𝑍 → (𝑎 × 𝑎) = (𝑍 × 𝑍))
33	32	sseq2d 3633	. . . . . . . . . . . . . 14 ⊢ (𝑎 = 𝑍 → ((𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ↔ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)))
34		weeq2 5103	. . . . . . . . . . . . . 14 ⊢ (𝑎 = 𝑍 → ((𝑊‘𝑍) We 𝑎 ↔ (𝑊‘𝑍) We 𝑍))
35	30, 33, 34	3anbi123d 1399	. . . . . . . . . . . . 13 ⊢ (𝑎 = 𝑍 → ((𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎) ↔ (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍)))
36	35	anbi2d 740	. . . . . . . . . . . 12 ⊢ (𝑎 = 𝑍 → ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)) ↔ (𝜑 ∧ (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍))))
37		id 22	. . . . . . . . . . . . . . . 16 ⊢ ((𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍) → (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍))
38	37	3expa 1265	. . . . . . . . . . . . . . 15 ⊢ (((𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)) ∧ (𝑊‘𝑍) We 𝑍) → (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍))
39	38	adantrr 753	. . . . . . . . . . . . . 14 ⊢ (((𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍)) ∧ ((𝑊‘𝑍) We 𝑍 ∧ ∀𝑏 ∈ 𝑍 [(◡(𝑊‘𝑍) “ {𝑏}) / 𝑣](𝑣𝐹((𝑊‘𝑍) ∩ (𝑣 × 𝑣))) = 𝑏)) → (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍))
40	26, 39	syl 17	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍))
41	40	pm4.71i 664	. . . . . . . . . . . 12 ⊢ (𝜑 ↔ (𝜑 ∧ (𝑍 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑍 × 𝑍) ∧ (𝑊‘𝑍) We 𝑍)))
42	36, 41	syl6bbr 278	. . . . . . . . . . 11 ⊢ (𝑎 = 𝑍 → ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)) ↔ 𝜑))
43		oveq1 6657	. . . . . . . . . . . . 13 ⊢ (𝑎 = 𝑍 → (𝑎𝐹(𝑊‘𝑍)) = (𝑍𝐹(𝑊‘𝑍)))
44	43, 31	eleq12d 2695	. . . . . . . . . . . 12 ⊢ (𝑎 = 𝑍 → ((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 ↔ (𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍))
45		breq1 4656	. . . . . . . . . . . 12 ⊢ (𝑎 = 𝑍 → (𝑎 ≺ ω ↔ 𝑍 ≺ ω))
46	44, 45	imbi12d 334	. . . . . . . . . . 11 ⊢ (𝑎 = 𝑍 → (((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 → 𝑎 ≺ ω) ↔ ((𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍 → 𝑍 ≺ ω)))
47	42, 46	imbi12d 334	. . . . . . . . . 10 ⊢ (𝑎 = 𝑍 → (((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)) → ((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 → 𝑎 ≺ ω)) ↔ (𝜑 → ((𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍 → 𝑍 ≺ ω))))
48		fvex 6201	. . . . . . . . . . 11 ⊢ (𝑊‘𝑍) ∈ V
49		sseq1 3626	. . . . . . . . . . . . . 14 ⊢ (𝑠 = (𝑊‘𝑍) → (𝑠 ⊆ (𝑎 × 𝑎) ↔ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎)))
50		weeq1 5102	. . . . . . . . . . . . . 14 ⊢ (𝑠 = (𝑊‘𝑍) → (𝑠 We 𝑎 ↔ (𝑊‘𝑍) We 𝑎))
51	49, 50	3anbi23d 1402	. . . . . . . . . . . . 13 ⊢ (𝑠 = (𝑊‘𝑍) → ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ↔ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)))
52	51	anbi2d 740	. . . . . . . . . . . 12 ⊢ (𝑠 = (𝑊‘𝑍) → ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) ↔ (𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎))))
53		oveq2 6658	. . . . . . . . . . . . . 14 ⊢ (𝑠 = (𝑊‘𝑍) → (𝑎𝐹𝑠) = (𝑎𝐹(𝑊‘𝑍)))
54	53	eleq1d 2686	. . . . . . . . . . . . 13 ⊢ (𝑠 = (𝑊‘𝑍) → ((𝑎𝐹𝑠) ∈ 𝑎 ↔ (𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎))
55	54	imbi1d 331	. . . . . . . . . . . 12 ⊢ (𝑠 = (𝑊‘𝑍) → (((𝑎𝐹𝑠) ∈ 𝑎 → 𝑎 ≺ ω) ↔ ((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 → 𝑎 ≺ ω)))
56	52, 55	imbi12d 334	. . . . . . . . . . 11 ⊢ (𝑠 = (𝑊‘𝑍) → (((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → ((𝑎𝐹𝑠) ∈ 𝑎 → 𝑎 ≺ ω)) ↔ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)) → ((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 → 𝑎 ≺ ω))))
57		omelon 8543	. . . . . . . . . . . . . . 15 ⊢ ω ∈ On
58		onenon 8775	. . . . . . . . . . . . . . 15 ⊢ (ω ∈ On → ω ∈ dom card)
59	57, 58	ax-mp 5	. . . . . . . . . . . . . 14 ⊢ ω ∈ dom card
60		simpr3 1069	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → 𝑠 We 𝑎)
61		19.8a 2052	. . . . . . . . . . . . . . . 16 ⊢ (𝑠 We 𝑎 → ∃𝑠 𝑠 We 𝑎)
62	60, 61	syl 17	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → ∃𝑠 𝑠 We 𝑎)
63		ween 8858	. . . . . . . . . . . . . . 15 ⊢ (𝑎 ∈ dom card ↔ ∃𝑠 𝑠 We 𝑎)
64	62, 63	sylibr 224	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → 𝑎 ∈ dom card)
65		domtri2 8815	. . . . . . . . . . . . . 14 ⊢ ((ω ∈ dom card ∧ 𝑎 ∈ dom card) → (ω ≼ 𝑎 ↔ ¬ 𝑎 ≺ ω))
66	59, 64, 65	sylancr 695	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → (ω ≼ 𝑎 ↔ ¬ 𝑎 ≺ ω))
67		nfv 1843	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑟(𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎))
68		nfcv 2764	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑟𝑎
69		nfmpt22 6723	. . . . . . . . . . . . . . . . . . . 20 ⊢ Ⅎ𝑟(𝑥 ∈ V, 𝑟 ∈ V ↦ if(𝑥 ∈ Fin, (𝐻‘(card‘𝑥)), (𝐷‘∩ {𝑧 ∈ ω ∣ ¬ (𝐷‘𝑧) ∈ 𝑥})))
70	18, 69	nfcxfr 2762	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑟𝐹
71		nfcv 2764	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑟𝑠
72	68, 70, 71	nfov 6676	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑟(𝑎𝐹𝑠)
73	72	nfel1 2779	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑟(𝑎𝐹𝑠) ∈ (𝐴 ∖ 𝑎)
74	67, 73	nfim 1825	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑟((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑠) ∈ (𝐴 ∖ 𝑎))
75		sseq1 3626	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑟 = 𝑠 → (𝑟 ⊆ (𝑎 × 𝑎) ↔ 𝑠 ⊆ (𝑎 × 𝑎)))
76		weeq1 5102	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑟 = 𝑠 → (𝑟 We 𝑎 ↔ 𝑠 We 𝑎))
77	75, 76	3anbi23d 1402	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑟 = 𝑠 → ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ↔ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)))
78	77	anbi1d 741	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑟 = 𝑠 → (((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎) ↔ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎)))
79	78	anbi2d 740	. . . . . . . . . . . . . . . . 17 ⊢ (𝑟 = 𝑠 → ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)) ↔ (𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎))))
80		oveq2 6658	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑟 = 𝑠 → (𝑎𝐹𝑟) = (𝑎𝐹𝑠))
81	80	eleq1d 2686	. . . . . . . . . . . . . . . . 17 ⊢ (𝑟 = 𝑠 → ((𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎) ↔ (𝑎𝐹𝑠) ∈ (𝐴 ∖ 𝑎)))
82	79, 81	imbi12d 334	. . . . . . . . . . . . . . . 16 ⊢ (𝑟 = 𝑠 → (((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎)) ↔ ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑠) ∈ (𝐴 ∖ 𝑎))))
83		nfv 1843	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑥(𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎))
84		nfcv 2764	. . . . . . . . . . . . . . . . . . . 20 ⊢ Ⅎ𝑥𝑎
85		nfmpt21 6722	. . . . . . . . . . . . . . . . . . . . 21 ⊢ Ⅎ𝑥(𝑥 ∈ V, 𝑟 ∈ V ↦ if(𝑥 ∈ Fin, (𝐻‘(card‘𝑥)), (𝐷‘∩ {𝑧 ∈ ω ∣ ¬ (𝐷‘𝑧) ∈ 𝑥})))
86	18, 85	nfcxfr 2762	. . . . . . . . . . . . . . . . . . . 20 ⊢ Ⅎ𝑥𝐹
87		nfcv 2764	. . . . . . . . . . . . . . . . . . . 20 ⊢ Ⅎ𝑥𝑟
88	84, 86, 87	nfov 6676	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑥(𝑎𝐹𝑟)
89	88	nfel1 2779	. . . . . . . . . . . . . . . . . 18 ⊢ Ⅎ𝑥(𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎)
90	83, 89	nfim 1825	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑥((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎))
91		sseq1 3626	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑥 = 𝑎 → (𝑥 ⊆ 𝐴 ↔ 𝑎 ⊆ 𝐴))
92		xpeq12 5134	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑥 = 𝑎 ∧ 𝑥 = 𝑎) → (𝑥 × 𝑥) = (𝑎 × 𝑎))
93	92	anidms 677	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑥 = 𝑎 → (𝑥 × 𝑥) = (𝑎 × 𝑎))
94	93	sseq2d 3633	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑥 = 𝑎 → (𝑟 ⊆ (𝑥 × 𝑥) ↔ 𝑟 ⊆ (𝑎 × 𝑎)))
95		weeq2 5103	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑥 = 𝑎 → (𝑟 We 𝑥 ↔ 𝑟 We 𝑎))
96	91, 94, 95	3anbi123d 1399	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑥 = 𝑎 → ((𝑥 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑥 × 𝑥) ∧ 𝑟 We 𝑥) ↔ (𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎)))
97		breq2 4657	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑥 = 𝑎 → (ω ≼ 𝑥 ↔ ω ≼ 𝑎))
98	96, 97	anbi12d 747	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑥 = 𝑎 → (((𝑥 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑥 × 𝑥) ∧ 𝑟 We 𝑥) ∧ ω ≼ 𝑥) ↔ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)))
99	15, 98	syl5bb 272	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = 𝑎 → (𝜓 ↔ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)))
100	99	anbi2d 740	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 𝑎 → ((𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎))))
101		oveq1 6657	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = 𝑎 → (𝑥𝐹𝑟) = (𝑎𝐹𝑟))
102		difeq2 3722	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = 𝑎 → (𝐴 ∖ 𝑥) = (𝐴 ∖ 𝑎))
103	101, 102	eleq12d 2695	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 𝑎 → ((𝑥𝐹𝑟) ∈ (𝐴 ∖ 𝑥) ↔ (𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎)))
104	100, 103	imbi12d 334	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 𝑎 → (((𝜑 ∧ 𝜓) → (𝑥𝐹𝑟) ∈ (𝐴 ∖ 𝑥)) ↔ ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎))))
105	5, 13, 14, 15, 16, 17, 18	pwfseqlem3 9482	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝜓) → (𝑥𝐹𝑟) ∈ (𝐴 ∖ 𝑥))
106	90, 104, 105	chvar 2262	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑟 ⊆ (𝑎 × 𝑎) ∧ 𝑟 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑟) ∈ (𝐴 ∖ 𝑎))
107	74, 82, 106	chvar 2262	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎)) → (𝑎𝐹𝑠) ∈ (𝐴 ∖ 𝑎))
108	107	eldifbd 3587	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ ((𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎) ∧ ω ≼ 𝑎)) → ¬ (𝑎𝐹𝑠) ∈ 𝑎)
109	108	expr 643	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → (ω ≼ 𝑎 → ¬ (𝑎𝐹𝑠) ∈ 𝑎))
110	66, 109	sylbird 250	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → (¬ 𝑎 ≺ ω → ¬ (𝑎𝐹𝑠) ∈ 𝑎))
111	110	con4d 114	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ 𝑠 ⊆ (𝑎 × 𝑎) ∧ 𝑠 We 𝑎)) → ((𝑎𝐹𝑠) ∈ 𝑎 → 𝑎 ≺ ω))
112	48, 56, 111	vtocl 3259	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑎 ⊆ 𝐴 ∧ (𝑊‘𝑍) ⊆ (𝑎 × 𝑎) ∧ (𝑊‘𝑍) We 𝑎)) → ((𝑎𝐹(𝑊‘𝑍)) ∈ 𝑎 → 𝑎 ≺ ω))
113	47, 112	vtoclg 3266	. . . . . . . . 9 ⊢ (𝑍 ∈ V → (𝜑 → ((𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍 → 𝑍 ≺ ω)))
114	29, 113	mpcom 38	. . . . . . . 8 ⊢ (𝜑 → ((𝑍𝐹(𝑊‘𝑍)) ∈ 𝑍 → 𝑍 ≺ ω))
115	23, 114	mpd 15	. . . . . . 7 ⊢ (𝜑 → 𝑍 ≺ ω)
116		isfinite 8549	. . . . . . 7 ⊢ (𝑍 ∈ Fin ↔ 𝑍 ≺ ω)
117	115, 116	sylibr 224	. . . . . 6 ⊢ (𝜑 → 𝑍 ∈ Fin)
118	5, 13, 14, 15, 16, 17, 18	pwfseqlem2 9481	. . . . . 6 ⊢ ((𝑍 ∈ Fin ∧ (𝑊‘𝑍) ∈ V) → (𝑍𝐹(𝑊‘𝑍)) = (𝐻‘(card‘𝑍)))
119	117, 48, 118	sylancl 694	. . . . 5 ⊢ (𝜑 → (𝑍𝐹(𝑊‘𝑍)) = (𝐻‘(card‘𝑍)))
120	119, 23	eqeltrrd 2702	. . . 4 ⊢ (𝜑 → (𝐻‘(card‘𝑍)) ∈ 𝑍)
121	4, 12, 24	fpwwe2lem3 9455	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝐻‘(card‘𝑍)) ∈ 𝑍) → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})𝐹((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})))) = (𝐻‘(card‘𝑍)))
122	120, 121	mpdan 702	. . . . . . . . 9 ⊢ (𝜑 → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})𝐹((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})))) = (𝐻‘(card‘𝑍)))
123		cnvimass 5485	. . . . . . . . . . . 12 ⊢ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊆ dom (𝑊‘𝑍)
124	27	simprd 479	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑊‘𝑍) ⊆ (𝑍 × 𝑍))
125		dmss 5323	. . . . . . . . . . . . . 14 ⊢ ((𝑊‘𝑍) ⊆ (𝑍 × 𝑍) → dom (𝑊‘𝑍) ⊆ dom (𝑍 × 𝑍))
126	124, 125	syl 17	. . . . . . . . . . . . 13 ⊢ (𝜑 → dom (𝑊‘𝑍) ⊆ dom (𝑍 × 𝑍))
127		dmxpss 5565	. . . . . . . . . . . . 13 ⊢ dom (𝑍 × 𝑍) ⊆ 𝑍
128	126, 127	syl6ss 3615	. . . . . . . . . . . 12 ⊢ (𝜑 → dom (𝑊‘𝑍) ⊆ 𝑍)
129	123, 128	syl5ss 3614	. . . . . . . . . . 11 ⊢ (𝜑 → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊆ 𝑍)
130	117, 129	ssfid 8183	. . . . . . . . . 10 ⊢ (𝜑 → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ Fin)
131	48	inex1 4799	. . . . . . . . . 10 ⊢ ((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))) ∈ V
132	5, 13, 14, 15, 16, 17, 18	pwfseqlem2 9481	. . . . . . . . . 10 ⊢ (((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ Fin ∧ ((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))) ∈ V) → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})𝐹((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})))) = (𝐻‘(card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))))
133	130, 131, 132	sylancl 694	. . . . . . . . 9 ⊢ (𝜑 → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})𝐹((𝑊‘𝑍) ∩ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) × (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})))) = (𝐻‘(card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))))
134	122, 133	eqtr3d 2658	. . . . . . . 8 ⊢ (𝜑 → (𝐻‘(card‘𝑍)) = (𝐻‘(card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))))
135		f1of1 6136	. . . . . . . . . 10 ⊢ (𝐻:ω–1-1-onto→𝑋 → 𝐻:ω–1-1→𝑋)
136	14, 135	syl 17	. . . . . . . . 9 ⊢ (𝜑 → 𝐻:ω–1-1→𝑋)
137		ficardom 8787	. . . . . . . . . 10 ⊢ (𝑍 ∈ Fin → (card‘𝑍) ∈ ω)
138	117, 137	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (card‘𝑍) ∈ ω)
139		ficardom 8787	. . . . . . . . . 10 ⊢ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ Fin → (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) ∈ ω)
140	130, 139	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) ∈ ω)
141		f1fveq 6519	. . . . . . . . 9 ⊢ ((𝐻:ω–1-1→𝑋 ∧ ((card‘𝑍) ∈ ω ∧ (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) ∈ ω)) → ((𝐻‘(card‘𝑍)) = (𝐻‘(card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))) ↔ (card‘𝑍) = (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))))
142	136, 138, 140, 141	syl12anc 1324	. . . . . . . 8 ⊢ (𝜑 → ((𝐻‘(card‘𝑍)) = (𝐻‘(card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))) ↔ (card‘𝑍) = (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))))
143	134, 142	mpbid 222	. . . . . . 7 ⊢ (𝜑 → (card‘𝑍) = (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})))
144	143	eqcomd 2628	. . . . . 6 ⊢ (𝜑 → (card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) = (card‘𝑍))
145		finnum 8774	. . . . . . . 8 ⊢ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ Fin → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ dom card)
146	130, 145	syl 17	. . . . . . 7 ⊢ (𝜑 → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ dom card)
147		finnum 8774	. . . . . . . 8 ⊢ (𝑍 ∈ Fin → 𝑍 ∈ dom card)
148	117, 147	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑍 ∈ dom card)
149		carden2 8813	. . . . . . 7 ⊢ (((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ∈ dom card ∧ 𝑍 ∈ dom card) → ((card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) = (card‘𝑍) ↔ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍))
150	146, 148, 149	syl2anc 693	. . . . . 6 ⊢ (𝜑 → ((card‘(◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))})) = (card‘𝑍) ↔ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍))
151	144, 150	mpbid 222	. . . . 5 ⊢ (𝜑 → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍)
152		dfpss2 3692	. . . . . . . 8 ⊢ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍 ↔ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊆ 𝑍 ∧ ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) = 𝑍))
153	152	baib 944	. . . . . . 7 ⊢ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊆ 𝑍 → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍 ↔ ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) = 𝑍))
154	129, 153	syl 17	. . . . . 6 ⊢ (𝜑 → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍 ↔ ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) = 𝑍))
155		php3 8146	. . . . . . . . 9 ⊢ ((𝑍 ∈ Fin ∧ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍) → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≺ 𝑍)
156		sdomnen 7984	. . . . . . . . 9 ⊢ ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≺ 𝑍 → ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍)
157	155, 156	syl 17	. . . . . . . 8 ⊢ ((𝑍 ∈ Fin ∧ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍) → ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍)
158	157	ex 450	. . . . . . 7 ⊢ (𝑍 ∈ Fin → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍 → ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍))
159	117, 158	syl 17	. . . . . 6 ⊢ (𝜑 → ((◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ⊊ 𝑍 → ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍))
160	154, 159	sylbird 250	. . . . 5 ⊢ (𝜑 → (¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) = 𝑍 → ¬ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ≈ 𝑍))
161	151, 160	mt4d 152	. . . 4 ⊢ (𝜑 → (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) = 𝑍)
162	120, 161	eleqtrrd 2704	. . 3 ⊢ (𝜑 → (𝐻‘(card‘𝑍)) ∈ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}))
163		fvex 6201	. . . 4 ⊢ (𝐻‘(card‘𝑍)) ∈ V
164	163	eliniseg 5494	. . . 4 ⊢ ((𝐻‘(card‘𝑍)) ∈ V → ((𝐻‘(card‘𝑍)) ∈ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ↔ (𝐻‘(card‘𝑍))(𝑊‘𝑍)(𝐻‘(card‘𝑍))))
165	163, 164	ax-mp 5	. . 3 ⊢ ((𝐻‘(card‘𝑍)) ∈ (◡(𝑊‘𝑍) “ {(𝐻‘(card‘𝑍))}) ↔ (𝐻‘(card‘𝑍))(𝑊‘𝑍)(𝐻‘(card‘𝑍)))
166	162, 165	sylib 208	. 2 ⊢ (𝜑 → (𝐻‘(card‘𝑍))(𝑊‘𝑍)(𝐻‘(card‘𝑍)))
167	26	simprd 479	. . . . 5 ⊢ (𝜑 → ((𝑊‘𝑍) We 𝑍 ∧ ∀𝑏 ∈ 𝑍 [(◡(𝑊‘𝑍) “ {𝑏}) / 𝑣](𝑣𝐹((𝑊‘𝑍) ∩ (𝑣 × 𝑣))) = 𝑏))
168	167	simpld 475	. . . 4 ⊢ (𝜑 → (𝑊‘𝑍) We 𝑍)
169		weso 5105	. . . 4 ⊢ ((𝑊‘𝑍) We 𝑍 → (𝑊‘𝑍) Or 𝑍)
170	168, 169	syl 17	. . 3 ⊢ (𝜑 → (𝑊‘𝑍) Or 𝑍)
171		sonr 5056	. . 3 ⊢ (((𝑊‘𝑍) Or 𝑍 ∧ (𝐻‘(card‘𝑍)) ∈ 𝑍) → ¬ (𝐻‘(card‘𝑍))(𝑊‘𝑍)(𝐻‘(card‘𝑍)))
172	170, 120, 171	syl2anc 693	. 2 ⊢ (𝜑 → ¬ (𝐻‘(card‘𝑍))(𝑊‘𝑍)(𝐻‘(card‘𝑍)))
173	166, 172	pm2.65i 185	1 ⊢ ¬ 𝜑

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 384   ∧ w3a 1037   = wceq 1483  ∃wex 1704   ∈ wcel 1990  ∀wral 2912  {crab 2916  Vcvv 3200  [wsbc 3435   ∖ cdif 3571   ∩ cin 3573   ⊆ wss 3574   ⊊ wpss 3575  ifcif 4086  𝒫 cpw 4158  {csn 4177  ∪ cuni 4436  ∩ cint 4475  ∪ ciun 4520   class class class wbr 4653  {copab 4712   Or wor 5034   We wwe 5072   × cxp 5112  ^◡ccnv 5113  dom cdm 5114  ran crn 5115   “ cima 5117  Oncon0 5723  –1-1→wf1 5885  –1-1-onto→wf1o 5887  ‘cfv 5888  (class class class)co 6650   ↦ cmpt2 6652  ωcom 7065   ↑_𝑚 cmap 7857   ≈ cen 7952   ≼ cdom 7953   ≺ csdm 7954  Fincfn 7955  cardccrd 8761

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-inf2 8538

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-se 5074  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-isom 5897  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-er 7742  df-map 7859  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-oi 8415  df-card 8765

This theorem is referenced by:  pwfseqlem5  9485