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Theorem unbenlem 17091
Description: Lemma for unben 17092. (Contributed by NM, 5-May-2005.) (Revised by Mario Carneiro, 15-Sep-2013.)
Hypothesis
Ref Expression
unbenlem.1 𝐺 = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 1) ↾ ω)
Assertion
Ref Expression
unbenlem ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → 𝐴 ≈ ω)
Distinct variable groups:   𝑚,𝑛,𝐴   𝑚,𝐺,𝑛
Allowed substitution hints:   𝐴(𝑥)   𝐺(𝑥)

Proof of Theorem unbenlem
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 nnex 12344 . . . . 5 ℕ ∈ V
21ssex 5281 . . . 4 (𝐴 ⊆ ℕ → 𝐴 ∈ V)
3 1z 12729 . . . . . . . 8 1 ∈ ℤ
4 unbenlem.1 . . . . . . . 8 𝐺 = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 1) ↾ ω)
53, 4om2uzf1oi 14099 . . . . . . 7 𝐺:ω–1-1-onto→(ℤ≥‘1)
6 nnuz 13007 . . . . . . . 8 ℕ = (ℤ≥‘1)
7 f1oeq3 6814 . . . . . . . 8 (ℕ = (ℤ≥‘1) → (𝐺:ω–1-1-onto→ℕ ↔ 𝐺:ω–1-1-onto→(ℤ≥‘1)))
86, 7ax-mp 5 . . . . . . 7 (𝐺:ω–1-1-onto→ℕ ↔ 𝐺:ω–1-1-onto→(ℤ≥‘1))
95, 8mpbir 234 . . . . . 6 𝐺:ω–1-1-onto→ℕ
10 f1ocnv 6837 . . . . . 6 (𝐺:ω–1-1-onto→ℕ → ◡𝐺:ℕ–1-1-onto→ω)
11 f1of1 6823 . . . . . 6 (◡𝐺:ℕ–1-1-onto→ω → ◡𝐺:ℕ–1-1→ω)
129, 10, 11mp2b 10 . . . . 5 ◡𝐺:ℕ–1-1→ω
13 f1ores 6839 . . . . 5 ((◡𝐺:ℕ–1-1→ω ∧ 𝐴 ⊆ ℕ) → (◡𝐺 ↾ 𝐴):𝐴–1-1-onto→(◡𝐺 “ 𝐴))
1412, 13mpan 703 . . . 4 (𝐴 ⊆ ℕ → (◡𝐺 ↾ 𝐴):𝐴–1-1-onto→(◡𝐺 “ 𝐴))
15 f1oeng 9000 . . . 4 ((𝐴 ∈ V ∧ (◡𝐺 ↾ 𝐴):𝐴–1-1-onto→(◡𝐺 “ 𝐴)) → 𝐴 ≈ (◡𝐺 “ 𝐴))
162, 14, 15syl2anc 596 . . 3 (𝐴 ⊆ ℕ → 𝐴 ≈ (◡𝐺 “ 𝐴))
1716adantr 486 . 2 ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → 𝐴 ≈ (◡𝐺 “ 𝐴))
18 imassrn 6197 . . . 4 (◡𝐺 “ 𝐴) ⊆ ran ◡𝐺
19 dfdm4 5876 . . . . 5 dom 𝐺 = ran ◡𝐺
20 f1of 6824 . . . . . . 7 (𝐺:ω–1-1-onto→ℕ → 𝐺:ω⟶ℕ)
219, 20ax-mp 5 . . . . . 6 𝐺:ω⟶ℕ
2221fdmi 6721 . . . . 5 dom 𝐺 = ω
2319, 22eqtr3i 2785 . . . 4 ran ◡𝐺 = ω
2418, 23sseqtri 3956 . . 3 (◡𝐺 “ 𝐴) ⊆ ω
253, 4om2uzuzi 14095 . . . . . . . . . . 11 (𝑦 ∈ ω → (𝐺‘𝑦) ∈ (ℤ≥‘1))
2625, 6eleqtrrdi 2871 . . . . . . . . . 10 (𝑦 ∈ ω → (𝐺‘𝑦) ∈ ℕ)
27 breq1 5105 . . . . . . . . . . . 12 (𝑚 = (𝐺‘𝑦) → (𝑚 < 𝑛 ↔ (𝐺‘𝑦) < 𝑛))
2827rexbidv 3186 . . . . . . . . . . 11 (𝑚 = (𝐺‘𝑦) → (∃𝑛 ∈ 𝐴 𝑚 < 𝑛 ↔ ∃𝑛 ∈ 𝐴 (𝐺‘𝑦) < 𝑛))
2928rspcv 3572 . . . . . . . . . 10 ((𝐺‘𝑦) ∈ ℕ → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → ∃𝑛 ∈ 𝐴 (𝐺‘𝑦) < 𝑛))
3026, 29syl 18 . . . . . . . . 9 (𝑦 ∈ ω → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → ∃𝑛 ∈ 𝐴 (𝐺‘𝑦) < 𝑛))
3130adantr 486 . . . . . . . 8 ((𝑦 ∈ ω ∧ 𝐴 ⊆ ℕ) → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → ∃𝑛 ∈ 𝐴 (𝐺‘𝑦) < 𝑛))
32 f1ocnv 6837 . . . . . . . . . . . . . . . . 17 ((◡𝐺 ↾ 𝐴):𝐴–1-1-onto→(◡𝐺 “ 𝐴) → ◡(◡𝐺 ↾ 𝐴):(◡𝐺 “ 𝐴)–1-1-onto→𝐴)
3314, 32syl 18 . . . . . . . . . . . . . . . 16 (𝐴 ⊆ ℕ → ◡(◡𝐺 ↾ 𝐴):(◡𝐺 “ 𝐴)–1-1-onto→𝐴)
34 f1ofun 6826 . . . . . . . . . . . . . . . . . 18 (𝐺:ω–1-1-onto→ℕ → Fun 𝐺)
359, 34ax-mp 5 . . . . . . . . . . . . . . . . 17 Fun 𝐺
36 funcnvres2 6620 . . . . . . . . . . . . . . . . 17 (Fun 𝐺 → ◡(◡𝐺 ↾ 𝐴) = (𝐺 ↾ (◡𝐺 “ 𝐴)))
37 f1oeq1 6812 . . . . . . . . . . . . . . . . 17 (◡(◡𝐺 ↾ 𝐴) = (𝐺 ↾ (◡𝐺 “ 𝐴)) → (◡(◡𝐺 ↾ 𝐴):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 ↔ (𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴))
3835, 36, 37mp2b 10 . . . . . . . . . . . . . . . 16 (◡(◡𝐺 ↾ 𝐴):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 ↔ (𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴)
3933, 38sylib 221 . . . . . . . . . . . . . . 15 (𝐴 ⊆ ℕ → (𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴)
40 f1ofo 6832 . . . . . . . . . . . . . . . . . 18 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → (𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–onto→𝐴)
41 forn 6799 . . . . . . . . . . . . . . . . . 18 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–onto→𝐴 → ran (𝐺 ↾ (◡𝐺 “ 𝐴)) = 𝐴)
4240, 41syl 18 . . . . . . . . . . . . . . . . 17 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → ran (𝐺 ↾ (◡𝐺 “ 𝐴)) = 𝐴)
4342eleq2d 2846 . . . . . . . . . . . . . . . 16 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → (𝑛 ∈ ran (𝐺 ↾ (◡𝐺 “ 𝐴)) ↔ 𝑛 ∈ 𝐴))
44 f1ofn 6825 . . . . . . . . . . . . . . . . 17 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → (𝐺 ↾ (◡𝐺 “ 𝐴)) Fn (◡𝐺 “ 𝐴))
45 fvelrnb 6945 . . . . . . . . . . . . . . . . 17 ((𝐺 ↾ (◡𝐺 “ 𝐴)) Fn (◡𝐺 “ 𝐴) → (𝑛 ∈ ran (𝐺 ↾ (◡𝐺 “ 𝐴)) ↔ ∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛))
4644, 45syl 18 . . . . . . . . . . . . . . . 16 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → (𝑛 ∈ ran (𝐺 ↾ (◡𝐺 “ 𝐴)) ↔ ∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛))
4743, 46bitr3d 284 . . . . . . . . . . . . . . 15 ((𝐺 ↾ (◡𝐺 “ 𝐴)):(◡𝐺 “ 𝐴)–1-1-onto→𝐴 → (𝑛 ∈ 𝐴 ↔ ∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛))
4839, 47syl 18 . . . . . . . . . . . . . 14 (𝐴 ⊆ ℕ → (𝑛 ∈ 𝐴 ↔ ∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛))
4948biimpa 482 . . . . . . . . . . . . 13 ((𝐴 ⊆ ℕ ∧ 𝑛 ∈ 𝐴) → ∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛)
50 fvres 6904 . . . . . . . . . . . . . . . . . . . . 21 (𝑚 ∈ (◡𝐺 “ 𝐴) → ((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = (𝐺‘𝑚))
5150eqeq1d 2762 . . . . . . . . . . . . . . . . . . . 20 (𝑚 ∈ (◡𝐺 “ 𝐴) → (((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛 ↔ (𝐺‘𝑚) = 𝑛))
5251biimpa 482 . . . . . . . . . . . . . . . . . . 19 ((𝑚 ∈ (◡𝐺 “ 𝐴) ∧ ((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛) → (𝐺‘𝑚) = 𝑛)
5352adantll 727 . . . . . . . . . . . . . . . . . 18 (((𝑦 ∈ ω ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) ∧ ((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛) → (𝐺‘𝑚) = 𝑛)
5424sseli 3904 . . . . . . . . . . . . . . . . . . . 20 (𝑚 ∈ (◡𝐺 “ 𝐴) → 𝑚 ∈ ω)
553, 4om2uzlt2i 14097 . . . . . . . . . . . . . . . . . . . 20 ((𝑦 ∈ ω ∧ 𝑚 ∈ ω) → (𝑦 ∈ 𝑚 ↔ (𝐺‘𝑦) < (𝐺‘𝑚)))
5654, 55sylan2 605 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ω ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) → (𝑦 ∈ 𝑚 ↔ (𝐺‘𝑦) < (𝐺‘𝑚)))
57 breq2 5106 . . . . . . . . . . . . . . . . . . 19 ((𝐺‘𝑚) = 𝑛 → ((𝐺‘𝑦) < (𝐺‘𝑚) ↔ (𝐺‘𝑦) < 𝑛))
5856, 57sylan9bb 519 . . . . . . . . . . . . . . . . . 18 (((𝑦 ∈ ω ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) ∧ (𝐺‘𝑚) = 𝑛) → (𝑦 ∈ 𝑚 ↔ (𝐺‘𝑦) < 𝑛))
5953, 58syldan 603 . . . . . . . . . . . . . . . . 17 (((𝑦 ∈ ω ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) ∧ ((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛) → (𝑦 ∈ 𝑚 ↔ (𝐺‘𝑦) < 𝑛))
6059biimparc 485 . . . . . . . . . . . . . . . 16 (((𝐺‘𝑦) < 𝑛 ∧ ((𝑦 ∈ ω ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) ∧ ((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛)) → 𝑦 ∈ 𝑚)
6160exp44 443 . . . . . . . . . . . . . . 15 ((𝐺‘𝑦) < 𝑛 → (𝑦 ∈ ω → (𝑚 ∈ (◡𝐺 “ 𝐴) → (((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛 → 𝑦 ∈ 𝑚))))
6261imp31 423 . . . . . . . . . . . . . 14 ((((𝐺‘𝑦) < 𝑛 ∧ 𝑦 ∈ ω) ∧ 𝑚 ∈ (◡𝐺 “ 𝐴)) → (((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛 → 𝑦 ∈ 𝑚))
6362reximdva 3175 . . . . . . . . . . . . 13 (((𝐺‘𝑦) < 𝑛 ∧ 𝑦 ∈ ω) → (∃𝑚 ∈ (◡𝐺 “ 𝐴)((𝐺 ↾ (◡𝐺 “ 𝐴))‘𝑚) = 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))
6449, 63syl5 35 . . . . . . . . . . . 12 (((𝐺‘𝑦) < 𝑛 ∧ 𝑦 ∈ ω) → ((𝐴 ⊆ ℕ ∧ 𝑛 ∈ 𝐴) → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))
6564exp4b 436 . . . . . . . . . . 11 ((𝐺‘𝑦) < 𝑛 → (𝑦 ∈ ω → (𝐴 ⊆ ℕ → (𝑛 ∈ 𝐴 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))))
6665com4l 93 . . . . . . . . . 10 (𝑦 ∈ ω → (𝐴 ⊆ ℕ → (𝑛 ∈ 𝐴 → ((𝐺‘𝑦) < 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))))
6766imp 412 . . . . . . . . 9 ((𝑦 ∈ ω ∧ 𝐴 ⊆ ℕ) → (𝑛 ∈ 𝐴 → ((𝐺‘𝑦) < 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚)))
6867rexlimdv 3161 . . . . . . . 8 ((𝑦 ∈ ω ∧ 𝐴 ⊆ ℕ) → (∃𝑛 ∈ 𝐴 (𝐺‘𝑦) < 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))
6931, 68syld 48 . . . . . . 7 ((𝑦 ∈ ω ∧ 𝐴 ⊆ ℕ) → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))
7069ex 418 . . . . . 6 (𝑦 ∈ ω → (𝐴 ⊆ ℕ → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚)))
7170com3l 90 . . . . 5 (𝐴 ⊆ ℕ → (∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛 → (𝑦 ∈ ω → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚)))
7271imp 412 . . . 4 ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → (𝑦 ∈ ω → ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚))
7372ralrimiv 3153 . . 3 ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → ∀𝑦 ∈ ω ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚)
74 unbnn3 9663 . . 3 (((◡𝐺 “ 𝐴) ⊆ ω ∧ ∀𝑦 ∈ ω ∃𝑚 ∈ (◡𝐺 “ 𝐴)𝑦 ∈ 𝑚) → (◡𝐺 “ 𝐴) ≈ ω)
7524, 73, 74sylancr 599 . 2 ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → (◡𝐺 “ 𝐴) ≈ ω)
76 entr 9036 . 2 ((𝐴 ≈ (◡𝐺 “ 𝐴) ∧ (◡𝐺 “ 𝐴) ≈ ω) → 𝐴 ≈ ω)
7717, 75, 76syl2anc 596 1 ((𝐴 ⊆ ℕ ∧ ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) → 𝐴 ≈ ω)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1569   ∈ wcel 2144  ∀wral 3076  ∃wrex 3086  Vcvv 3450   ⊆ wss 3895   class class class wbr 5102   ↦ cmpt 5185  ◡ccnv 5649  dom cdm 5650  ran crn 5651   ↾ cres 5652   “ cima 5653  Fun wfun 6532   Fn wfn 6533  ⟶wf 6534  –1-1→wf1 6535  –onto→wfo 6536  –1-1-onto→wf1o 6537  ‘cfv 6538  (class class class)co 7420  ωcom 7877  reccrdg 8420   ≈ cen 8973  1c1 11204   + caddc 11206   < clt 11346  ℕcn 12338  ℤ≥cuz 12968
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7751  ax-inf2 9645  ax-cnex 11259  ax-resscn 11260  ax-1cn 11261  ax-icn 11262  ax-addcl 11263  ax-addrcl 11264  ax-mulcl 11265  ax-mulrcl 11266  ax-mulcom 11267  ax-addass 11268  ax-mulass 11269  ax-distr 11270  ax-i2m1 11271  ax-1ne0 11272  ax-1rid 11273  ax-rnegex 11274  ax-rrecex 11275  ax-cnre 11276  ax-pre-lttri 11277  ax-pre-lttrn 11278  ax-pre-ltadd 11279  ax-pre-mulgt0 11280
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-nel 3062  df-ral 3077  df-rex 3087  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-pss 4014  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-int 4907  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5545  df-eprel 5550  df-po 5558  df-so 5559  df-fr 5603  df-we 5605  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-riota 7377  df-ov 7423  df-oprab 7424  df-mpo 7425  df-om 7878  df-2nd 8002  df-frecs 8302  df-wrecs 8333  df-recs 8382  df-rdg 8421  df-er 8720  df-en 8977  df-dom 8978  df-sdom 8979  df-pnf 11348  df-mnf 11349  df-xr 11350  df-ltxr 11351  df-le 11352  df-sub 11546  df-neg 11547  df-nn 12339  df-n0 12610  df-z 12697  df-uz 12969
This theorem is used by:  unben  17092
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