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Theorem fin1a2lem6 9419
Description: Lemma for fin1a2 9429. Establish that ω can be broken into two equipollent pieces. (Contributed by Stefan O'Rear, 7-Nov-2014.)
Hypotheses
Ref Expression
fin1a2lem.b 𝐸 = (𝑥 ∈ ω ↦ (2𝑜 ·𝑜 𝑥))
fin1a2lem.aa 𝑆 = (𝑥 ∈ On ↦ suc 𝑥)
Assertion
Ref Expression
fin1a2lem6 (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(ω ∖ ran 𝐸)

Proof of Theorem fin1a2lem6
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fin1a2lem.aa . . . 4 𝑆 = (𝑥 ∈ On ↦ suc 𝑥)
21fin1a2lem2 9415 . . 3 𝑆:On–1-1→On
3 fin1a2lem.b . . . . 5 𝐸 = (𝑥 ∈ ω ↦ (2𝑜 ·𝑜 𝑥))
43fin1a2lem4 9417 . . . 4 𝐸:ω–1-1→ω
5 f1f 6262 . . . 4 (𝐸:ω–1-1→ω → 𝐸:ω⟶ω)
6 frn 6214 . . . . 5 (𝐸:ω⟶ω → ran 𝐸 ⊆ ω)
7 omsson 7234 . . . . 5 ω ⊆ On
86, 7syl6ss 3756 . . . 4 (𝐸:ω⟶ω → ran 𝐸 ⊆ On)
94, 5, 8mp2b 10 . . 3 ran 𝐸 ⊆ On
10 f1ores 6312 . . 3 ((𝑆:On–1-1→On ∧ ran 𝐸 ⊆ On) → (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(𝑆 “ ran 𝐸))
112, 9, 10mp2an 710 . 2 (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(𝑆 “ ran 𝐸)
129sseli 3740 . . . . . . . . 9 (𝑏 ∈ ran 𝐸𝑏 ∈ On)
131fin1a2lem1 9414 . . . . . . . . 9 (𝑏 ∈ On → (𝑆𝑏) = suc 𝑏)
1412, 13syl 17 . . . . . . . 8 (𝑏 ∈ ran 𝐸 → (𝑆𝑏) = suc 𝑏)
1514eqeq1d 2762 . . . . . . 7 (𝑏 ∈ ran 𝐸 → ((𝑆𝑏) = 𝑎 ↔ suc 𝑏 = 𝑎))
1615rexbiia 3178 . . . . . 6 (∃𝑏 ∈ ran 𝐸(𝑆𝑏) = 𝑎 ↔ ∃𝑏 ∈ ran 𝐸 suc 𝑏 = 𝑎)
174, 5, 6mp2b 10 . . . . . . . . . . . 12 ran 𝐸 ⊆ ω
1817sseli 3740 . . . . . . . . . . 11 (𝑏 ∈ ran 𝐸𝑏 ∈ ω)
19 peano2 7251 . . . . . . . . . . 11 (𝑏 ∈ ω → suc 𝑏 ∈ ω)
2018, 19syl 17 . . . . . . . . . 10 (𝑏 ∈ ran 𝐸 → suc 𝑏 ∈ ω)
213fin1a2lem5 9418 . . . . . . . . . . . 12 (𝑏 ∈ ω → (𝑏 ∈ ran 𝐸 ↔ ¬ suc 𝑏 ∈ ran 𝐸))
2221biimpd 219 . . . . . . . . . . 11 (𝑏 ∈ ω → (𝑏 ∈ ran 𝐸 → ¬ suc 𝑏 ∈ ran 𝐸))
2318, 22mpcom 38 . . . . . . . . . 10 (𝑏 ∈ ran 𝐸 → ¬ suc 𝑏 ∈ ran 𝐸)
2420, 23jca 555 . . . . . . . . 9 (𝑏 ∈ ran 𝐸 → (suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸))
25 eleq1 2827 . . . . . . . . . 10 (suc 𝑏 = 𝑎 → (suc 𝑏 ∈ ω ↔ 𝑎 ∈ ω))
26 eleq1 2827 . . . . . . . . . . 11 (suc 𝑏 = 𝑎 → (suc 𝑏 ∈ ran 𝐸𝑎 ∈ ran 𝐸))
2726notbid 307 . . . . . . . . . 10 (suc 𝑏 = 𝑎 → (¬ suc 𝑏 ∈ ran 𝐸 ↔ ¬ 𝑎 ∈ ran 𝐸))
2825, 27anbi12d 749 . . . . . . . . 9 (suc 𝑏 = 𝑎 → ((suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸) ↔ (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸)))
2924, 28syl5ibcom 235 . . . . . . . 8 (𝑏 ∈ ran 𝐸 → (suc 𝑏 = 𝑎 → (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸)))
3029rexlimiv 3165 . . . . . . 7 (∃𝑏 ∈ ran 𝐸 suc 𝑏 = 𝑎 → (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸))
31 peano1 7250 . . . . . . . . . . . . . 14 ∅ ∈ ω
323fin1a2lem3 9416 . . . . . . . . . . . . . 14 (∅ ∈ ω → (𝐸‘∅) = (2𝑜 ·𝑜 ∅))
3331, 32ax-mp 5 . . . . . . . . . . . . 13 (𝐸‘∅) = (2𝑜 ·𝑜 ∅)
34 om0x 7768 . . . . . . . . . . . . 13 (2𝑜 ·𝑜 ∅) = ∅
3533, 34eqtri 2782 . . . . . . . . . . . 12 (𝐸‘∅) = ∅
36 f1fun 6264 . . . . . . . . . . . . . 14 (𝐸:ω–1-1→ω → Fun 𝐸)
374, 36ax-mp 5 . . . . . . . . . . . . 13 Fun 𝐸
38 f1dm 6266 . . . . . . . . . . . . . . 15 (𝐸:ω–1-1→ω → dom 𝐸 = ω)
394, 38ax-mp 5 . . . . . . . . . . . . . 14 dom 𝐸 = ω
4031, 39eleqtrri 2838 . . . . . . . . . . . . 13 ∅ ∈ dom 𝐸
41 fvelrn 6515 . . . . . . . . . . . . 13 ((Fun 𝐸 ∧ ∅ ∈ dom 𝐸) → (𝐸‘∅) ∈ ran 𝐸)
4237, 40, 41mp2an 710 . . . . . . . . . . . 12 (𝐸‘∅) ∈ ran 𝐸
4335, 42eqeltrri 2836 . . . . . . . . . . 11 ∅ ∈ ran 𝐸
44 eleq1 2827 . . . . . . . . . . 11 (𝑎 = ∅ → (𝑎 ∈ ran 𝐸 ↔ ∅ ∈ ran 𝐸))
4543, 44mpbiri 248 . . . . . . . . . 10 (𝑎 = ∅ → 𝑎 ∈ ran 𝐸)
4645necon3bi 2958 . . . . . . . . 9 𝑎 ∈ ran 𝐸𝑎 ≠ ∅)
47 nnsuc 7247 . . . . . . . . 9 ((𝑎 ∈ ω ∧ 𝑎 ≠ ∅) → ∃𝑏 ∈ ω 𝑎 = suc 𝑏)
4846, 47sylan2 492 . . . . . . . 8 ((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) → ∃𝑏 ∈ ω 𝑎 = suc 𝑏)
49 eleq1 2827 . . . . . . . . . . . . . . . 16 (𝑎 = suc 𝑏 → (𝑎 ∈ ω ↔ suc 𝑏 ∈ ω))
50 eleq1 2827 . . . . . . . . . . . . . . . . 17 (𝑎 = suc 𝑏 → (𝑎 ∈ ran 𝐸 ↔ suc 𝑏 ∈ ran 𝐸))
5150notbid 307 . . . . . . . . . . . . . . . 16 (𝑎 = suc 𝑏 → (¬ 𝑎 ∈ ran 𝐸 ↔ ¬ suc 𝑏 ∈ ran 𝐸))
5249, 51anbi12d 749 . . . . . . . . . . . . . . 15 (𝑎 = suc 𝑏 → ((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ↔ (suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸)))
5352anbi1d 743 . . . . . . . . . . . . . 14 (𝑎 = suc 𝑏 → (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) ↔ ((suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸) ∧ 𝑏 ∈ ω)))
54 simplr 809 . . . . . . . . . . . . . . 15 (((suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) → ¬ suc 𝑏 ∈ ran 𝐸)
5521adantl 473 . . . . . . . . . . . . . . 15 (((suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) → (𝑏 ∈ ran 𝐸 ↔ ¬ suc 𝑏 ∈ ran 𝐸))
5654, 55mpbird 247 . . . . . . . . . . . . . 14 (((suc 𝑏 ∈ ω ∧ ¬ suc 𝑏 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) → 𝑏 ∈ ran 𝐸)
5753, 56syl6bi 243 . . . . . . . . . . . . 13 (𝑎 = suc 𝑏 → (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) → 𝑏 ∈ ran 𝐸))
5857com12 32 . . . . . . . . . . . 12 (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ 𝑏 ∈ ω) → (𝑎 = suc 𝑏𝑏 ∈ ran 𝐸))
5958impr 650 . . . . . . . . . . 11 (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ (𝑏 ∈ ω ∧ 𝑎 = suc 𝑏)) → 𝑏 ∈ ran 𝐸)
60 simprr 813 . . . . . . . . . . . 12 (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ (𝑏 ∈ ω ∧ 𝑎 = suc 𝑏)) → 𝑎 = suc 𝑏)
6160eqcomd 2766 . . . . . . . . . . 11 (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ (𝑏 ∈ ω ∧ 𝑎 = suc 𝑏)) → suc 𝑏 = 𝑎)
6259, 61jca 555 . . . . . . . . . 10 (((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) ∧ (𝑏 ∈ ω ∧ 𝑎 = suc 𝑏)) → (𝑏 ∈ ran 𝐸 ∧ suc 𝑏 = 𝑎))
6362ex 449 . . . . . . . . 9 ((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) → ((𝑏 ∈ ω ∧ 𝑎 = suc 𝑏) → (𝑏 ∈ ran 𝐸 ∧ suc 𝑏 = 𝑎)))
6463reximdv2 3152 . . . . . . . 8 ((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) → (∃𝑏 ∈ ω 𝑎 = suc 𝑏 → ∃𝑏 ∈ ran 𝐸 suc 𝑏 = 𝑎))
6548, 64mpd 15 . . . . . . 7 ((𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸) → ∃𝑏 ∈ ran 𝐸 suc 𝑏 = 𝑎)
6630, 65impbii 199 . . . . . 6 (∃𝑏 ∈ ran 𝐸 suc 𝑏 = 𝑎 ↔ (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸))
6716, 66bitri 264 . . . . 5 (∃𝑏 ∈ ran 𝐸(𝑆𝑏) = 𝑎 ↔ (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸))
68 f1fn 6263 . . . . . . 7 (𝑆:On–1-1→On → 𝑆 Fn On)
692, 68ax-mp 5 . . . . . 6 𝑆 Fn On
70 fvelimab 6415 . . . . . 6 ((𝑆 Fn On ∧ ran 𝐸 ⊆ On) → (𝑎 ∈ (𝑆 “ ran 𝐸) ↔ ∃𝑏 ∈ ran 𝐸(𝑆𝑏) = 𝑎))
7169, 9, 70mp2an 710 . . . . 5 (𝑎 ∈ (𝑆 “ ran 𝐸) ↔ ∃𝑏 ∈ ran 𝐸(𝑆𝑏) = 𝑎)
72 eldif 3725 . . . . 5 (𝑎 ∈ (ω ∖ ran 𝐸) ↔ (𝑎 ∈ ω ∧ ¬ 𝑎 ∈ ran 𝐸))
7367, 71, 723bitr4i 292 . . . 4 (𝑎 ∈ (𝑆 “ ran 𝐸) ↔ 𝑎 ∈ (ω ∖ ran 𝐸))
7473eqriv 2757 . . 3 (𝑆 “ ran 𝐸) = (ω ∖ ran 𝐸)
75 f1oeq3 6290 . . 3 ((𝑆 “ ran 𝐸) = (ω ∖ ran 𝐸) → ((𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(𝑆 “ ran 𝐸) ↔ (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(ω ∖ ran 𝐸)))
7674, 75ax-mp 5 . 2 ((𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(𝑆 “ ran 𝐸) ↔ (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(ω ∖ ran 𝐸))
7711, 76mpbi 220 1 (𝑆 ↾ ran 𝐸):ran 𝐸1-1-onto→(ω ∖ ran 𝐸)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wb 196  wa 383   = wceq 1632  wcel 2139  wne 2932  wrex 3051  cdif 3712  wss 3715  c0 4058  cmpt 4881  dom cdm 5266  ran crn 5267  cres 5268  cima 5269  Oncon0 5884  suc csuc 5886  Fun wfun 6043   Fn wfn 6044  wf 6045  1-1wf1 6046  1-1-ontowf1o 6048  cfv 6049  (class class class)co 6813  ωcom 7230  2𝑜c2o 7723   ·𝑜 comu 7727
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-rep 4923  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-reu 3057  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-pred 5841  df-ord 5887  df-on 5888  df-lim 5889  df-suc 5890  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-ov 6816  df-oprab 6817  df-mpt2 6818  df-om 7231  df-1st 7333  df-2nd 7334  df-wrecs 7576  df-recs 7637  df-rdg 7675  df-1o 7729  df-2o 7730  df-oadd 7733  df-omul 7734
This theorem is referenced by:  fin1a2lem7  9420
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