| Step | Hyp | Ref
| Expression |
| 1 | | ballotfi.m |
. 2
⊢ 𝑀 ∈ ℕ |
| 2 | | ballotfi.n |
. 2
⊢ 𝑁 ∈ ℕ |
| 3 | | ballotfi.o |
. 2
⊢ 𝑂 = {𝑐 ∈ (𝒫 (1...(𝑀 + 𝑁)) ∩ Fin) ∣ (♯‘𝑐) = 𝑀} |
| 4 | | ballotfi.p |
. 2
⊢ 𝑃 = (𝑥 ∈ (𝒫 𝑂 ∩ Fin) ↦ ((♯‘𝑥) / (♯‘𝑂))) |
| 5 | | ballotfi.f |
. 2
⊢ 𝐹 = (𝑐 ∈ 𝑂 ↦ (𝑖 ∈ ℤ ↦
((♯‘((1...𝑖)
∩ 𝑐)) −
(♯‘((1...𝑖)
∖ 𝑐))))) |
| 6 | | ballotfi.e |
. 2
⊢ 𝐸 = {𝑐 ∈ 𝑂 ∣ ∀𝑖 ∈ (1...(𝑀 + 𝑁))0 < ((𝐹‘𝑐)‘𝑖)} |
| 7 | | ballotfi.mgtn |
. 2
⊢ 𝑁 < 𝑀 |
| 8 | | fveq2 5675 |
. . . . . . . 8
⊢ (𝑞 = 𝑐 → (𝐹‘𝑞) = (𝐹‘𝑐)) |
| 9 | 8 | fveq1d 5677 |
. . . . . . 7
⊢ (𝑞 = 𝑐 → ((𝐹‘𝑞)‘𝑝) = ((𝐹‘𝑐)‘𝑝)) |
| 10 | 9 | eqeq1d 2243 |
. . . . . 6
⊢ (𝑞 = 𝑐 → (((𝐹‘𝑞)‘𝑝) = 0 ↔ ((𝐹‘𝑐)‘𝑝) = 0)) |
| 11 | 10 | rabbidv 2804 |
. . . . 5
⊢ (𝑞 = 𝑐 → {𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0} = {𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0}) |
| 12 | 11 | infeq1d 7316 |
. . . 4
⊢ (𝑞 = 𝑐 → inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ) = inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0}, ℝ, < )) |
| 13 | 12 | cbvmptv 4211 |
. . 3
⊢ (𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < )) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0}, ℝ, < )) |
| 14 | | fveqeq2 5684 |
. . . . . 6
⊢ (𝑝 = 𝑘 → (((𝐹‘𝑐)‘𝑝) = 0 ↔ ((𝐹‘𝑐)‘𝑘) = 0)) |
| 15 | 14 | cbvrabv 2814 |
. . . . 5
⊢ {𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0} = {𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑘) = 0} |
| 16 | 15 | infeq1i 7317 |
. . . 4
⊢
inf({𝑝 ∈
(1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0}, ℝ, < ) = inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑘) = 0}, ℝ, < ) |
| 17 | 16 | mpteq2i 4202 |
. . 3
⊢ (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑝) = 0}, ℝ, < )) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑘) = 0}, ℝ, < )) |
| 18 | 13, 17 | eqtri 2255 |
. 2
⊢ (𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < )) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑘) = 0}, ℝ, < )) |
| 19 | | fveq2 5675 |
. . . . . . 7
⊢ (𝑟 = 𝑐 → ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) = ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐)) |
| 20 | 19 | breq2d 4126 |
. . . . . 6
⊢ (𝑟 = 𝑐 → (𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) ↔ 𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐))) |
| 21 | 19 | oveq1d 6073 |
. . . . . . 7
⊢ (𝑟 = 𝑐 → (((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) = (((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1)) |
| 22 | 21 | oveq1d 6073 |
. . . . . 6
⊢ (𝑟 = 𝑐 → ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠) = ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠)) |
| 23 | 20, 22 | ifbieq1d 3649 |
. . . . 5
⊢ (𝑟 = 𝑐 → if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠) = if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠)) |
| 24 | 23 | mpteq2dv 4206 |
. . . 4
⊢ (𝑟 = 𝑐 → (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠)) = (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠))) |
| 25 | 24 | cbvmptv 4211 |
. . 3
⊢ (𝑟 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠))) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠))) |
| 26 | | breq1 4117 |
. . . . . 6
⊢ (𝑠 = 𝑖 → (𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) ↔ 𝑖 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐))) |
| 27 | | oveq2 6066 |
. . . . . 6
⊢ (𝑠 = 𝑖 → ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠) = ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑖)) |
| 28 | | id 19 |
. . . . . 6
⊢ (𝑠 = 𝑖 → 𝑠 = 𝑖) |
| 29 | 26, 27, 28 | ifbieq12d 3653 |
. . . . 5
⊢ (𝑠 = 𝑖 → if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠) = if(𝑖 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑖), 𝑖)) |
| 30 | 29 | cbvmptv 4211 |
. . . 4
⊢ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠)) = (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑖), 𝑖)) |
| 31 | 30 | mpteq2i 4202 |
. . 3
⊢ (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑠), 𝑠))) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑖), 𝑖))) |
| 32 | 25, 31 | eqtri 2255 |
. 2
⊢ (𝑟 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠))) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑐) + 1) − 𝑖), 𝑖))) |
| 33 | | eqid 2234 |
. 2
⊢ (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (((𝑟 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠)))‘𝑐) “ 𝑐)) = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (((𝑟 ∈ (𝑂 ∖ 𝐸) ↦ (𝑠 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑠 ≤ ((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟), ((((𝑞 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑝 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑞)‘𝑝) = 0}, ℝ, < ))‘𝑟) + 1) − 𝑠), 𝑠)))‘𝑐) “ 𝑐)) |
| 34 | 1, 2, 3, 4, 5, 6, 7, 18, 32, 33 | ballotfilemth 13225 |
1
⊢ (𝑃‘𝐸) = ((𝑀 − 𝑁) / (𝑀 + 𝑁)) |