Theorem nninfomnilem 16908

Description: Lemma for nninfomni 16909. (Contributed by Jim Kingdon, 10-Aug-2022.)

Hypothesis

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

Assertion

Ref	Expression
nninfomnilem	⊢ ℕ∞ ∈ Omni

Distinct variable groups:   𝑖,𝐸,𝑘,𝑛   𝑖,𝑞,𝑘,𝑛

Allowed substitution hint:   𝐸(𝑞)

Proof of Theorem nninfomnilem

Dummy variables 𝑝 𝑟 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nninfex 7425	. . 3 ⊢ ℕ∞ ∈ V
2		isomnimap 7441	. . 3 ⊢ (ℕ∞ ∈ V → (ℕ∞ ∈ Omni ↔ ∀𝑟 ∈ (2o ↑𝑚 ℕ∞)(∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅ ∨ ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o)))
3	1, 2	ax-mp 5	. 2 ⊢ (ℕ∞ ∈ Omni ↔ ∀𝑟 ∈ (2o ↑𝑚 ℕ∞)(∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅ ∨ ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o))
4		elmapi 6917	. . . . . 6 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → 𝑟:ℕ∞⟶2o)
5		nninfsel.e	. . . . . . . 8 ⊢ 𝐸 = (𝑞 ∈ (2o ↑𝑚 ℕ∞) ↦ (𝑛 ∈ ω ↦ if(∀𝑘 ∈ suc 𝑛(𝑞‘(𝑖 ∈ ω ↦ if(𝑖 ∈ 𝑘, 1o, ∅))) = 1o, 1o, ∅)))
6	5	nninfself 16903	. . . . . . 7 ⊢ 𝐸:(2o ↑𝑚 ℕ∞)⟶ℕ∞
7	6	ffvelcdmi 5816	. . . . . 6 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝐸‘𝑟) ∈ ℕ∞)
8	4, 7	ffvelcdmd 5818	. . . . 5 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝑟‘(𝐸‘𝑟)) ∈ 2o)
9		df2o3 6675	. . . . 5 ⊢ 2o = {∅, 1o}
10	8, 9	eleqtrdi 2327	. . . 4 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝑟‘(𝐸‘𝑟)) ∈ {∅, 1o})
11		elpri 3717	. . . 4 ⊢ ((𝑟‘(𝐸‘𝑟)) ∈ {∅, 1o} → ((𝑟‘(𝐸‘𝑟)) = ∅ ∨ (𝑟‘(𝐸‘𝑟)) = 1o))
12	10, 11	syl 14	. . 3 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → ((𝑟‘(𝐸‘𝑟)) = ∅ ∨ (𝑟‘(𝐸‘𝑟)) = 1o))
13		fveqeq2 5684	. . . . . . 7 ⊢ (𝑝 = (𝐸‘𝑟) → ((𝑟‘𝑝) = ∅ ↔ (𝑟‘(𝐸‘𝑟)) = ∅))
14	13	rspcev 2923	. . . . . 6 ⊢ (((𝐸‘𝑟) ∈ ℕ∞ ∧ (𝑟‘(𝐸‘𝑟)) = ∅) → ∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅)
15	14	ex 115	. . . . 5 ⊢ ((𝐸‘𝑟) ∈ ℕ∞ → ((𝑟‘(𝐸‘𝑟)) = ∅ → ∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅))
16	7, 15	syl 14	. . . 4 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → ((𝑟‘(𝐸‘𝑟)) = ∅ → ∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅))
17		simpl 109	. . . . . 6 ⊢ ((𝑟 ∈ (2o ↑𝑚 ℕ∞) ∧ (𝑟‘(𝐸‘𝑟)) = 1o) → 𝑟 ∈ (2o ↑𝑚 ℕ∞))
18		simpr 110	. . . . . 6 ⊢ ((𝑟 ∈ (2o ↑𝑚 ℕ∞) ∧ (𝑟‘(𝐸‘𝑟)) = 1o) → (𝑟‘(𝐸‘𝑟)) = 1o)
19	5, 17, 18	nninfsel 16907	. . . . 5 ⊢ ((𝑟 ∈ (2o ↑𝑚 ℕ∞) ∧ (𝑟‘(𝐸‘𝑟)) = 1o) → ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o)
20	19	ex 115	. . . 4 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → ((𝑟‘(𝐸‘𝑟)) = 1o → ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o))
21	16, 20	orim12d 794	. . 3 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (((𝑟‘(𝐸‘𝑟)) = ∅ ∨ (𝑟‘(𝐸‘𝑟)) = 1o) → (∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅ ∨ ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o)))
22	12, 21	mpd 13	. 2 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (∃𝑝 ∈ ℕ∞ (𝑟‘𝑝) = ∅ ∨ ∀𝑝 ∈ ℕ∞ (𝑟‘𝑝) = 1o))
23	3, 22	mprgbir 2602	1 ⊢ ℕ∞ ∈ Omni

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   ∨ wo 716   = wceq 1398   ∈ wcel 2205  ∀wral 2522  ∃wrex 2523  Vcvv 2815  ∅c0 3512  ifcif 3624  {cpr 3695   ↦ cmpt 4176  suc csuc 4491  ωcom 4717  ‘cfv 5357  (class class class)co 6058  1_oc1o 6653  2_oc2o 6654   ↑_𝑚 cmap 6895  ℕ_∞xnninf 7423  Omnicomni 7438

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-iinf 4715

This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-if 3625  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-id 4419  df-iord 4492  df-on 4494  df-suc 4497  df-iom 4718  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1o 6660  df-2o 6661  df-map 6897  df-nninf 7424  df-omni 7439

This theorem is referenced by:  nninfomni  16909