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Theorem ballotlem7 34534
Description: 𝑅 is a bijection between two subsets of (𝑂𝐸): one where a vote for A is picked first, and one where a vote for B is picked first. (Contributed by Thierry Arnoux, 12-Dec-2016.)
Hypotheses
Ref Expression
ballotth.m 𝑀 ∈ ℕ
ballotth.n 𝑁 ∈ ℕ
ballotth.o 𝑂 = {𝑐 ∈ 𝒫 (1...(𝑀 + 𝑁)) ∣ (♯‘𝑐) = 𝑀}
ballotth.p 𝑃 = (𝑥 ∈ 𝒫 𝑂 ↦ ((♯‘𝑥) / (♯‘𝑂)))
ballotth.f 𝐹 = (𝑐𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐)))))
ballotth.e 𝐸 = {𝑐𝑂 ∣ ∀𝑖 ∈ (1...(𝑀 + 𝑁))0 < ((𝐹𝑐)‘𝑖)}
ballotth.mgtn 𝑁 < 𝑀
ballotth.i 𝐼 = (𝑐 ∈ (𝑂𝐸) ↦ inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹𝑐)‘𝑘) = 0}, ℝ, < ))
ballotth.s 𝑆 = (𝑐 ∈ (𝑂𝐸) ↦ (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ (𝐼𝑐), (((𝐼𝑐) + 1) − 𝑖), 𝑖)))
ballotth.r 𝑅 = (𝑐 ∈ (𝑂𝐸) ↦ ((𝑆𝑐) “ 𝑐))
Assertion
Ref Expression
ballotlem7 (𝑅 ↾ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}):{𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}–1-1-onto→{𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
Distinct variable groups:   𝑀,𝑐   𝑁,𝑐   𝑂,𝑐   𝑖,𝑀   𝑖,𝑁   𝑖,𝑂   𝑘,𝑀   𝑘,𝑁   𝑘,𝑂   𝑖,𝑐,𝐹,𝑘   𝑖,𝐸,𝑘   𝑘,𝐼,𝑐   𝐸,𝑐   𝑖,𝐼,𝑐   𝑆,𝑘,𝑖,𝑐   𝑅,𝑖,𝑘   𝑥,𝑐,𝐹   𝑥,𝑀   𝑥,𝑁,𝑘,𝑖
Allowed substitution hints:   𝑃(𝑥,𝑖,𝑘,𝑐)   𝑅(𝑥,𝑐)   𝑆(𝑥)   𝐸(𝑥)   𝐼(𝑥)   𝑂(𝑥)

Proof of Theorem ballotlem7
Dummy variable 𝑏 is distinct from all other variables.
StepHypRef Expression
1 ballotth.r . . 3 𝑅 = (𝑐 ∈ (𝑂𝐸) ↦ ((𝑆𝑐) “ 𝑐))
21funmpt2 6558 . 2 Fun 𝑅
3 ballotth.m . . 3 𝑀 ∈ ℕ
4 ballotth.n . . 3 𝑁 ∈ ℕ
5 ballotth.o . . 3 𝑂 = {𝑐 ∈ 𝒫 (1...(𝑀 + 𝑁)) ∣ (♯‘𝑐) = 𝑀}
6 ballotth.p . . 3 𝑃 = (𝑥 ∈ 𝒫 𝑂 ↦ ((♯‘𝑥) / (♯‘𝑂)))
7 ballotth.f . . 3 𝐹 = (𝑐𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐)))))
8 ballotth.e . . 3 𝐸 = {𝑐𝑂 ∣ ∀𝑖 ∈ (1...(𝑀 + 𝑁))0 < ((𝐹𝑐)‘𝑖)}
9 ballotth.mgtn . . 3 𝑁 < 𝑀
10 ballotth.i . . 3 𝐼 = (𝑐 ∈ (𝑂𝐸) ↦ inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹𝑐)‘𝑘) = 0}, ℝ, < ))
11 ballotth.s . . 3 𝑆 = (𝑐 ∈ (𝑂𝐸) ↦ (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ (𝐼𝑐), (((𝐼𝑐) + 1) − 𝑖), 𝑖)))
123, 4, 5, 6, 7, 8, 9, 10, 11, 1ballotlemrinv 34532 . 2 𝑅 = 𝑅
13 rabid 3430 . . . . . 6 (𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ↔ (𝑐 ∈ (𝑂𝐸) ∧ 1 ∈ 𝑐))
143, 4, 5, 6, 7, 8, 9, 10, 11, 1ballotlemrc 34529 . . . . . . . 8 (𝑐 ∈ (𝑂𝐸) → (𝑅𝑐) ∈ (𝑂𝐸))
1514adantr 480 . . . . . . 7 ((𝑐 ∈ (𝑂𝐸) ∧ 1 ∈ 𝑐) → (𝑅𝑐) ∈ (𝑂𝐸))
163, 4, 5, 6, 7, 8, 9, 10ballotlem1c 34506 . . . . . . . . . 10 ((𝑐 ∈ (𝑂𝐸) ∧ 1 ∈ 𝑐) → ¬ (𝐼𝑐) ∈ 𝑐)
1716ex 412 . . . . . . . . 9 (𝑐 ∈ (𝑂𝐸) → (1 ∈ 𝑐 → ¬ (𝐼𝑐) ∈ 𝑐))
183, 4, 5, 6, 7, 8, 9, 10, 11, 1ballotlem1ri 34533 . . . . . . . . . 10 (𝑐 ∈ (𝑂𝐸) → (1 ∈ (𝑅𝑐) ↔ (𝐼𝑐) ∈ 𝑐))
1918notbid 318 . . . . . . . . 9 (𝑐 ∈ (𝑂𝐸) → (¬ 1 ∈ (𝑅𝑐) ↔ ¬ (𝐼𝑐) ∈ 𝑐))
2017, 19sylibrd 259 . . . . . . . 8 (𝑐 ∈ (𝑂𝐸) → (1 ∈ 𝑐 → ¬ 1 ∈ (𝑅𝑐)))
2120imp 406 . . . . . . 7 ((𝑐 ∈ (𝑂𝐸) ∧ 1 ∈ 𝑐) → ¬ 1 ∈ (𝑅𝑐))
2215, 21jca 511 . . . . . 6 ((𝑐 ∈ (𝑂𝐸) ∧ 1 ∈ 𝑐) → ((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐)))
2313, 22sylbi 217 . . . . 5 (𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} → ((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐)))
2423rgen 3047 . . . 4 𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐))
25 eleq2 2818 . . . . . . . 8 (𝑏 = (𝑅𝑐) → (1 ∈ 𝑏 ↔ 1 ∈ (𝑅𝑐)))
2625notbid 318 . . . . . . 7 (𝑏 = (𝑅𝑐) → (¬ 1 ∈ 𝑏 ↔ ¬ 1 ∈ (𝑅𝑐)))
2726elrab 3662 . . . . . 6 ((𝑅𝑐) ∈ {𝑏 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑏} ↔ ((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐)))
28 eleq2 2818 . . . . . . . . 9 (𝑏 = 𝑐 → (1 ∈ 𝑏 ↔ 1 ∈ 𝑐))
2928notbid 318 . . . . . . . 8 (𝑏 = 𝑐 → (¬ 1 ∈ 𝑏 ↔ ¬ 1 ∈ 𝑐))
3029cbvrabv 3419 . . . . . . 7 {𝑏 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑏} = {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
3130eleq2i 2821 . . . . . 6 ((𝑅𝑐) ∈ {𝑏 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑏} ↔ (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐})
3227, 31bitr3i 277 . . . . 5 (((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐)) ↔ (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐})
3332ralbii 3076 . . . 4 (∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ((𝑅𝑐) ∈ (𝑂𝐸) ∧ ¬ 1 ∈ (𝑅𝑐)) ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐})
3424, 33mpbi 230 . . 3 𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
35 ssrab2 4046 . . . . 5 {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ⊆ (𝑂𝐸)
36 fvex 6874 . . . . . . 7 (𝑆𝑐) ∈ V
37 imaexg 7892 . . . . . . 7 ((𝑆𝑐) ∈ V → ((𝑆𝑐) “ 𝑐) ∈ V)
3836, 37ax-mp 5 . . . . . 6 ((𝑆𝑐) “ 𝑐) ∈ V
3938, 1dmmpti 6665 . . . . 5 dom 𝑅 = (𝑂𝐸)
4035, 39sseqtrri 3999 . . . 4 {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ⊆ dom 𝑅
41 nfrab1 3429 . . . . 5 𝑐{𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}
42 nfrab1 3429 . . . . 5 𝑐{𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
43 nfmpt1 5209 . . . . . 6 𝑐(𝑐 ∈ (𝑂𝐸) ↦ ((𝑆𝑐) “ 𝑐))
441, 43nfcxfr 2890 . . . . 5 𝑐𝑅
4541, 42, 44funimass4f 32568 . . . 4 ((Fun 𝑅 ∧ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ⊆ dom 𝑅) → ((𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}))
462, 40, 45mp2an 692 . . 3 ((𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐})
4734, 46mpbir 231 . 2 (𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
48 rabid 3430 . . . . . 6 (𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ↔ (𝑐 ∈ (𝑂𝐸) ∧ ¬ 1 ∈ 𝑐))
4914adantr 480 . . . . . . 7 ((𝑐 ∈ (𝑂𝐸) ∧ ¬ 1 ∈ 𝑐) → (𝑅𝑐) ∈ (𝑂𝐸))
503, 4, 5, 6, 7, 8, 9, 10ballotlemic 34505 . . . . . . . . . 10 ((𝑐 ∈ (𝑂𝐸) ∧ ¬ 1 ∈ 𝑐) → (𝐼𝑐) ∈ 𝑐)
5150ex 412 . . . . . . . . 9 (𝑐 ∈ (𝑂𝐸) → (¬ 1 ∈ 𝑐 → (𝐼𝑐) ∈ 𝑐))
5251, 18sylibrd 259 . . . . . . . 8 (𝑐 ∈ (𝑂𝐸) → (¬ 1 ∈ 𝑐 → 1 ∈ (𝑅𝑐)))
5352imp 406 . . . . . . 7 ((𝑐 ∈ (𝑂𝐸) ∧ ¬ 1 ∈ 𝑐) → 1 ∈ (𝑅𝑐))
5449, 53jca 511 . . . . . 6 ((𝑐 ∈ (𝑂𝐸) ∧ ¬ 1 ∈ 𝑐) → ((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐)))
5548, 54sylbi 217 . . . . 5 (𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} → ((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐)))
5655rgen 3047 . . . 4 𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐))
5725elrab 3662 . . . . . 6 ((𝑅𝑐) ∈ {𝑏 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑏} ↔ ((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐)))
5828cbvrabv 3419 . . . . . . 7 {𝑏 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑏} = {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}
5958eleq2i 2821 . . . . . 6 ((𝑅𝑐) ∈ {𝑏 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑏} ↔ (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐})
6057, 59bitr3i 277 . . . . 5 (((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐)) ↔ (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐})
6160ralbii 3076 . . . 4 (∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ((𝑅𝑐) ∈ (𝑂𝐸) ∧ 1 ∈ (𝑅𝑐)) ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐})
6256, 61mpbi 230 . . 3 𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}
63 ssrab2 4046 . . . . 5 {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ⊆ (𝑂𝐸)
6463, 39sseqtrri 3999 . . . 4 {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ⊆ dom 𝑅
6542, 41, 44funimass4f 32568 . . . 4 ((Fun 𝑅 ∧ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} ⊆ dom 𝑅) → ((𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}))
662, 64, 65mp2an 692 . . 3 ((𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐} ↔ ∀𝑐 ∈ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐} (𝑅𝑐) ∈ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐})
6762, 66mpbir 231 . 2 (𝑅 “ {𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}) ⊆ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}
682, 12, 47, 67, 40, 64rinvf1o 32561 1 (𝑅 ↾ {𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}):{𝑐 ∈ (𝑂𝐸) ∣ 1 ∈ 𝑐}–1-1-onto→{𝑐 ∈ (𝑂𝐸) ∣ ¬ 1 ∈ 𝑐}
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wb 206  wa 395   = wceq 1540  wcel 2109  wral 3045  {crab 3408  Vcvv 3450  cdif 3914  cin 3916  wss 3917  ifcif 4491  𝒫 cpw 4566   class class class wbr 5110  cmpt 5191  dom cdm 5641  cres 5643  cima 5644  Fun wfun 6508  1-1-ontowf1o 6513  cfv 6514  (class class class)co 7390  infcinf 9399  cr 11074  0cc0 11075  1c1 11076   + caddc 11078   < clt 11215  cle 11216  cmin 11412   / cdiv 11842  cn 12193  cz 12536  ...cfz 13475  chash 14302
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-rep 5237  ax-sep 5254  ax-nul 5264  ax-pow 5323  ax-pr 5390  ax-un 7714  ax-cnex 11131  ax-resscn 11132  ax-1cn 11133  ax-icn 11134  ax-addcl 11135  ax-addrcl 11136  ax-mulcl 11137  ax-mulrcl 11138  ax-mulcom 11139  ax-addass 11140  ax-mulass 11141  ax-distr 11142  ax-i2m1 11143  ax-1ne0 11144  ax-1rid 11145  ax-rnegex 11146  ax-rrecex 11147  ax-cnre 11148  ax-pre-lttri 11149  ax-pre-lttrn 11150  ax-pre-ltadd 11151  ax-pre-mulgt0 11152
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-nel 3031  df-ral 3046  df-rex 3055  df-rmo 3356  df-reu 3357  df-rab 3409  df-v 3452  df-sbc 3757  df-csb 3866  df-dif 3920  df-un 3922  df-in 3924  df-ss 3934  df-pss 3937  df-nul 4300  df-if 4492  df-pw 4568  df-sn 4593  df-pr 4595  df-op 4599  df-uni 4875  df-int 4914  df-iun 4960  df-br 5111  df-opab 5173  df-mpt 5192  df-tr 5218  df-id 5536  df-eprel 5541  df-po 5549  df-so 5550  df-fr 5594  df-we 5596  df-xp 5647  df-rel 5648  df-cnv 5649  df-co 5650  df-dm 5651  df-rn 5652  df-res 5653  df-ima 5654  df-pred 6277  df-ord 6338  df-on 6339  df-lim 6340  df-suc 6341  df-iota 6467  df-fun 6516  df-fn 6517  df-f 6518  df-f1 6519  df-fo 6520  df-f1o 6521  df-fv 6522  df-riota 7347  df-ov 7393  df-oprab 7394  df-mpo 7395  df-om 7846  df-1st 7971  df-2nd 7972  df-frecs 8263  df-wrecs 8294  df-recs 8343  df-rdg 8381  df-1o 8437  df-oadd 8441  df-er 8674  df-en 8922  df-dom 8923  df-sdom 8924  df-fin 8925  df-sup 9400  df-inf 9401  df-dju 9861  df-card 9899  df-pnf 11217  df-mnf 11218  df-xr 11219  df-ltxr 11220  df-le 11221  df-sub 11414  df-neg 11415  df-nn 12194  df-2 12256  df-n0 12450  df-z 12537  df-uz 12801  df-rp 12959  df-fz 13476  df-hash 14303
This theorem is referenced by:  ballotlem8  34535
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