Theorem nninfomnilem 17035

Description: Lemma for nninfomni 17036. (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 7455	. . 3 ⊢ ℕ∞ ∈ V
2		isomnimap 7471	. . 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 6938	. . . . . 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 17030	. . . . . . 7 ⊢ 𝐸:(2o ↑𝑚 ℕ∞)⟶ℕ∞
7	6	ffvelcdmi 5836	. . . . . 6 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝐸‘𝑟) ∈ ℕ∞)
8	4, 7	ffvelcdmd 5838	. . . . 5 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝑟‘(𝐸‘𝑟)) ∈ 2o)
9		df2o3 6696	. . . . 5 ⊢ 2o = {∅, 1o}
10	8, 9	eleqtrdi 2331	. . . 4 ⊢ (𝑟 ∈ (2o ↑𝑚 ℕ∞) → (𝑟‘(𝐸‘𝑟)) ∈ {∅, 1o})
11		elpri 3731	. . . 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 5702	. . . . . . 7 ⊢ (𝑝 = (𝐸‘𝑟) → ((𝑟‘𝑝) = ∅ ↔ (𝑟‘(𝐸‘𝑟)) = ∅))
14	13	rspcev 2929	. . . . . 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 17034	. . . . 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 798	. . 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 2608	1 ⊢ ℕ∞ ∈ Omni

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   ∨ wo 720   = wceq 1402   ∈ wcel 2209  ∀wral 2528  ∃wrex 2529  Vcvv 2821  ∅c0 3520  ifcif 3638  {cpr 3709   ↦ cmpt 4190  suc csuc 4508  ωcom 4735  ‘cfv 5375  (class class class)co 6079  1_oc1o 6674  2_oc2o 6675   ↑_𝑚 cmap 6916  ℕ_∞xnninf 7453  Omnicomni 7468

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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-13 2211  ax-14 2212  ax-ext 2220  ax-coll 4244  ax-sep 4247  ax-nul 4257  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682  ax-iinf 4733

This theorem depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3639  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-tr 4228  df-id 4436  df-iord 4509  df-on 4511  df-suc 4514  df-iom 4736  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-ov 6082  df-oprab 6083  df-mpo 6084  df-1o 6681  df-2o 6682  df-map 6918  df-nninf 7454  df-omni 7469

This theorem is referenced by:  nninfomni  17036