Theorem nninfsellemeq 14534

Description: Lemma for nninfsel 14537. (Contributed by Jim Kingdon, 9-Aug-2022.)

Hypotheses

Ref	Expression
nninfsel.e	⊢ 𝐸 = (𝑞 ∈ (2o ↑𝑚 ℕ∞) ↦ (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
nninfsel.q	⊢ (𝜑 → 𝑄 ∈ (2o ↑𝑚 ℕ∞))
nninfsel.1	⊢ (𝜑 → (𝑄‘(𝐸‘𝑄)) = 1o)
nninfsel.n	⊢ (𝜑 → 𝑁 ∈ ω)
nninfsel.qk	⊢ (𝜑 → ∀𝑘 ∈ 𝑁 (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
nninfsel.qn	⊢ (𝜑 → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅))) = ∅)

Assertion

Ref	Expression
nninfsellemeq	⊢ (𝜑 → (𝐸‘𝑄) = (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅)))

Distinct variable groups:   𝑖,𝑁,𝑘,𝑛   𝑄,𝑛,𝑘,𝑞   𝜑,𝑖,𝑛   𝑖,𝑞

Allowed substitution hints:   𝜑(𝑘,𝑞)   𝑄(𝑖)   𝐸(𝑖,𝑘,𝑛,𝑞)   𝑁(𝑞)

Proof of Theorem nninfsellemeq

Dummy variable 𝑗 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		nninfsel.e	. . . . 5 ⊢ 𝐸 = (𝑞 ∈ (2o ↑𝑚 ℕ∞) ↦ (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
2	1	nninfself 14533	. . . 4 ⊢ 𝐸:(2o ↑𝑚 ℕ∞)⟶ℕ∞
3	2	a1i 9	. . 3 ⊢ (𝜑 → 𝐸:(2o ↑𝑚 ℕ∞)⟶ℕ∞)
4		nninfsel.q	. . 3 ⊢ (𝜑 → 𝑄 ∈ (2o ↑𝑚 ℕ∞))
5	3, 4	ffvelcdmd 5649	. 2 ⊢ (𝜑 → (𝐸‘𝑄) ∈ ℕ∞)
6		nninfsel.n	. 2 ⊢ (𝜑 → 𝑁 ∈ ω)
7		fveq1 5511	. . . . . . . . . . 11 ⊢ (𝑞 = 𝑄 → (𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))))
8	7	eqeq1d 2186	. . . . . . . . . 10 ⊢ (𝑞 = 𝑄 → ((𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o ↔ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o))
9	8	ralbidv 2477	. . . . . . . . 9 ⊢ (𝑞 = 𝑄 → (∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o ↔ ∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o))
10	9	ifbid 3555	. . . . . . . 8 ⊢ (𝑞 = 𝑄 → if(∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅) = if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅))
11	10	mpteq2dv 4092	. . . . . . 7 ⊢ (𝑞 = 𝑄 → (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)) = (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
12		omex 4590	. . . . . . . 8 ⊢ ω ∈ V
13	12	mptex 5739	. . . . . . 7 ⊢ (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)) ∈ V
14	11, 1, 13	fvmpt 5590	. . . . . 6 ⊢ (𝑄 ∈ (2o ↑𝑚 ℕ∞) → (𝐸‘𝑄) = (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
15	4, 14	syl 14	. . . . 5 ⊢ (𝜑 → (𝐸‘𝑄) = (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
16	15	adantr 276	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → (𝐸‘𝑄) = (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
17		simpr 110	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → 𝑛 = 𝑗)
18		simplr 528	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → 𝑗 ∈ 𝑁)
19	17, 18	eqeltrd 2254	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → 𝑛 ∈ 𝑁)
20		nnord 4609	. . . . . . . . 9 ⊢ (𝑁 ∈ ω → Ord 𝑁)
21		vex 2740	. . . . . . . . . 10 ⊢ 𝑛 ∈ V
22		ordelsuc 4502	. . . . . . . . . 10 ⊢ ((𝑛 ∈ V ∧ Ord 𝑁) → (𝑛 ∈ 𝑁 ↔ suc 𝑛 ⊆ 𝑁))
23	21, 22	mpan 424	. . . . . . . . 9 ⊢ (Ord 𝑁 → (𝑛 ∈ 𝑁 ↔ suc 𝑛 ⊆ 𝑁))
24	6, 20, 23	3syl 17	. . . . . . . 8 ⊢ (𝜑 → (𝑛 ∈ 𝑁 ↔ suc 𝑛 ⊆ 𝑁))
25	24	ad2antrr 488	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → (𝑛 ∈ 𝑁 ↔ suc 𝑛 ⊆ 𝑁))
26	19, 25	mpbid 147	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → suc 𝑛 ⊆ 𝑁)
27		nninfsel.qk	. . . . . . 7 ⊢ (𝜑 → ∀𝑘 ∈ 𝑁 (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
28	27	ad2antrr 488	. . . . . 6 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → ∀𝑘 ∈ 𝑁 (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
29		ssralv 3219	. . . . . 6 ⊢ (suc 𝑛 ⊆ 𝑁 → (∀𝑘 ∈ 𝑁 (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o → ∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o))
30	26, 28, 29	sylc 62	. . . . 5 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → ∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
31	30	iftrued 3541	. . . 4 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝑁) ∧ 𝑛 = 𝑗) → if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅) = 1o)
32		simpr 110	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → 𝑗 ∈ 𝑁)
33	6	adantr 276	. . . . 5 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → 𝑁 ∈ ω)
34		elnn 4603	. . . . 5 ⊢ ((𝑗 ∈ 𝑁 ∧ 𝑁 ∈ ω) → 𝑗 ∈ ω)
35	32, 33, 34	syl2anc 411	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → 𝑗 ∈ ω)
36		1onn 6516	. . . . 5 ⊢ 1o ∈ ω
37	36	a1i 9	. . . 4 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → 1o ∈ ω)
38	16, 31, 35, 37	fvmptd 5594	. . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑁) → ((𝐸‘𝑄)‘𝑗) = 1o)
39	38	ralrimiva 2550	. 2 ⊢ (𝜑 → ∀𝑗 ∈ 𝑁 ((𝐸‘𝑄)‘𝑗) = 1o)
40	21	sucid 4415	. . . . . . 7 ⊢ 𝑛 ∈ suc 𝑛
41	40	a1i 9	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → 𝑛 ∈ suc 𝑛)
42		1n0 6428	. . . . . . . 8 ⊢ 1o ≠ ∅
43	42	nesymi 2393	. . . . . . 7 ⊢ ¬ ∅ = 1o
44		simpr 110	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → 𝑛 = 𝑁)
45	44	eleq2d 2247	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → (𝑖 ∈ 𝑛 ↔ 𝑖 ∈ 𝑁))
46	45	ifbid 3555	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → if(𝑖 ∈ 𝑛, 1o, ∅) = if(𝑖 ∈ 𝑁, 1o, ∅))
47	46	mpteq2dv 4092	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅)) = (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅)))
48	47	fveq2d 5516	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅))))
49		nninfsel.qn	. . . . . . . . . 10 ⊢ (𝜑 → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅))) = ∅)
50	49	adantr 276	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅))) = ∅)
51	48, 50	eqtrd 2210	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = ∅)
52	51	eqeq1d 2186	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → ((𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = 1o ↔ ∅ = 1o))
53	43, 52	mtbiri 675	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = 1o)
54		elequ2 2153	. . . . . . . . . . . 12 ⊢ (𝑘 = 𝑛 → (𝑖 ∈ 𝑘 ↔ 𝑖 ∈ 𝑛))
55	54	ifbid 3555	. . . . . . . . . . 11 ⊢ (𝑘 = 𝑛 → if(𝑖 ∈ 𝑘, 1o, ∅) = if(𝑖 ∈ 𝑛, 1o, ∅))
56	55	mpteq2dv 4092	. . . . . . . . . 10 ⊢ (𝑘 = 𝑛 → (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅)) = (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅)))
57	56	fveq2d 5516	. . . . . . . . 9 ⊢ (𝑘 = 𝑛 → (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))))
58	57	eqeq1d 2186	. . . . . . . 8 ⊢ (𝑘 = 𝑛 → ((𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o ↔ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = 1o))
59	58	notbid 667	. . . . . . 7 ⊢ (𝑘 = 𝑛 → (¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o ↔ ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = 1o))
60	59	rspcev 2841	. . . . . 6 ⊢ ((𝑛 ∈ suc 𝑛 ∧ ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑛, 1o, ∅))) = 1o) → ∃𝑘 ∈ suc 𝑛 ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
61	41, 53, 60	syl2anc 411	. . . . 5 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → ∃𝑘 ∈ suc 𝑛 ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
62		rexnalim 2466	. . . . 5 ⊢ (∃𝑘 ∈ suc 𝑛 ¬ (𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o → ¬ ∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
63	61, 62	syl 14	. . . 4 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → ¬ ∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o)
64	63	iffalsed 3544	. . 3 ⊢ ((𝜑 ∧ 𝑛 = 𝑁) → if(∀𝑘 ∈ suc 𝑛(𝑄‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅) = ∅)
65		peano1 4591	. . . 4 ⊢ ∅ ∈ ω
66	65	a1i 9	. . 3 ⊢ (𝜑 → ∅ ∈ ω)
67	15, 64, 6, 66	fvmptd 5594	. 2 ⊢ (𝜑 → ((𝐸‘𝑄)‘𝑁) = ∅)
68	5, 6, 39, 67	nnnninfeq 7121	1 ⊢ (𝜑 → (𝐸‘𝑄) = (𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑁, 1o, ∅)))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1353   ∈ wcel 2148  ∀wral 2455  ∃wrex 2456  Vcvv 2737   ⊆ wss 3129  ∅c0 3422  ifcif 3534   ↦ cmpt 4062  Ord word 4360  suc csuc 4363  ωcom 4587  ⟶wf 5209  ‘cfv 5213  (class class class)co 5870  1_oc1o 6405  2_oc2o 6406   ↑_𝑚 cmap 6643  ℕ_∞xnninf 7113

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-coll 4116  ax-sep 4119  ax-nul 4127  ax-pow 4172  ax-pr 4207  ax-un 4431  ax-setind 4534  ax-iinf 4585

This theorem depends on definitions:  df-bi 117  df-dc 835  df-3or 979  df-3an 980  df-tru 1356  df-fal 1359  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ne 2348  df-ral 2460  df-rex 2461  df-reu 2462  df-rab 2464  df-v 2739  df-sbc 2963  df-csb 3058  df-dif 3131  df-un 3133  df-in 3135  df-ss 3142  df-nul 3423  df-if 3535  df-pw 3577  df-sn 3598  df-pr 3599  df-op 3601  df-uni 3809  df-int 3844  df-iun 3887  df-br 4002  df-opab 4063  df-mpt 4064  df-tr 4100  df-id 4291  df-iord 4364  df-on 4366  df-suc 4369  df-iom 4588  df-xp 4630  df-rel 4631  df-cnv 4632  df-co 4633  df-dm 4634  df-rn 4635  df-res 4636  df-ima 4637  df-iota 5175  df-fun 5215  df-fn 5216  df-f 5217  df-f1 5218  df-fo 5219  df-f1o 5220  df-fv 5221  df-ov 5873  df-oprab 5874  df-mpo 5875  df-1o 6412  df-2o 6413  df-map 6645  df-nninf 7114

This theorem is referenced by:  nninfsellemqall  14535