Theorem ballotlemgval 35206

Description: Expand the value of ↑. (Contributed by Thierry Arnoux, 21-Apr-2017.)

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 = (𝑐 ∈ 𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐)))))
ballotth.e	⊢ 𝐸 = {𝑐 ∈ 𝑂 ∣ ∀𝑖 ∈ (1...(𝑀 + 𝑁))0 < ((𝐹‘𝑐)‘𝑖)}
ballotth.mgtn	⊢ 𝑁 < 𝑀
ballotth.i	⊢ 𝐼 = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ inf({𝑘 ∈ (1...(𝑀 + 𝑁)) ∣ ((𝐹‘𝑐)‘𝑘) = 0}, ℝ, < ))
ballotth.s	⊢ 𝑆 = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ (𝑖 ∈ (1...(𝑀 + 𝑁)) ↦ if(𝑖 ≤ (𝐼‘𝑐), (((𝐼‘𝑐) + 1) − 𝑖), 𝑖)))
ballotth.r	⊢ 𝑅 = (𝑐 ∈ (𝑂 ∖ 𝐸) ↦ ((𝑆‘𝑐) “ 𝑐))
ballotlemg	⊢ ↑ = (𝑢 ∈ Fin, 𝑣 ∈ Fin ↦ ((♯‘(𝑣 ∩ 𝑢)) − (♯‘(𝑣 ∖ 𝑢))))

Assertion

Ref	Expression
ballotlemgval	⊢ ((𝑈 ∈ Fin ∧ 𝑉 ∈ Fin) → (𝑈 ↑ 𝑉) = ((♯‘(𝑉 ∩ 𝑈)) − (♯‘(𝑉 ∖ 𝑈))))

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   𝑣,𝑢,𝐼   𝑢,𝑅,𝑣   𝑢,𝑆,𝑣   𝑢,𝑈,𝑣   𝑢,𝑉,𝑣

Allowed substitution hints:   𝑃(𝑥, 𝑣, 𝑢, 𝑖, 𝑘, 𝑐)   𝑅(𝑥, 𝑘, 𝑐)   𝑆(𝑥)   𝑈(𝑥, 𝑖, 𝑘, 𝑐)   𝐸(𝑥, 𝑣, 𝑢)   ↑ (𝑥, 𝑣, 𝑢, 𝑖, 𝑘, 𝑐)   𝐹(𝑥, 𝑣, 𝑢)   𝐼(𝑥)   𝑀(𝑥, 𝑣, 𝑢)   𝑁(𝑥, 𝑣, 𝑢)   𝑂(𝑥, 𝑣, 𝑢)   𝑉(𝑥, 𝑖, 𝑘, 𝑐)

Proof of Theorem ballotlemgval

Step	Hyp	Ref	Expression
1		ineq2 4110	. . . 4 ⊢ (𝑢 = 𝑈 → (𝑣 ∩ 𝑢) = (𝑣 ∩ 𝑈))
2	1	fveq2d 6894	. . 3 ⊢ (𝑢 = 𝑈 → (♯‘(𝑣 ∩ 𝑢)) = (♯‘(𝑣 ∩ 𝑈)))
3		difeq2 4056	. . . 4 ⊢ (𝑢 = 𝑈 → (𝑣 ∖ 𝑢) = (𝑣 ∖ 𝑈))
4	3	fveq2d 6894	. . 3 ⊢ (𝑢 = 𝑈 → (♯‘(𝑣 ∖ 𝑢)) = (♯‘(𝑣 ∖ 𝑈)))
5	2, 4	oveq12d 7442	. 2 ⊢ (𝑢 = 𝑈 → ((♯‘(𝑣 ∩ 𝑢)) − (♯‘(𝑣 ∖ 𝑢))) = ((♯‘(𝑣 ∩ 𝑈)) − (♯‘(𝑣 ∖ 𝑈))))
6		ineq1 4109	. . . 4 ⊢ (𝑣 = 𝑉 → (𝑣 ∩ 𝑈) = (𝑉 ∩ 𝑈))
7	6	fveq2d 6894	. . 3 ⊢ (𝑣 = 𝑉 → (♯‘(𝑣 ∩ 𝑈)) = (♯‘(𝑉 ∩ 𝑈)))
8		difeq1 4055	. . . 4 ⊢ (𝑣 = 𝑉 → (𝑣 ∖ 𝑈) = (𝑉 ∖ 𝑈))
9	8	fveq2d 6894	. . 3 ⊢ (𝑣 = 𝑉 → (♯‘(𝑣 ∖ 𝑈)) = (♯‘(𝑉 ∖ 𝑈)))
10	7, 9	oveq12d 7442	. 2 ⊢ (𝑣 = 𝑉 → ((♯‘(𝑣 ∩ 𝑈)) − (♯‘(𝑣 ∖ 𝑈))) = ((♯‘(𝑉 ∩ 𝑈)) − (♯‘(𝑉 ∖ 𝑈))))
11		ballotlemg	. 2 ⊢ ↑ = (𝑢 ∈ Fin, 𝑣 ∈ Fin ↦ ((♯‘(𝑣 ∩ 𝑢)) − (♯‘(𝑣 ∖ 𝑢))))
12		ovex 7457	. 2 ⊢ ((♯‘(𝑉 ∩ 𝑈)) − (♯‘(𝑉 ∖ 𝑈))) ∈ V
13	5, 10, 11, 12	ovmpo 7584	1 ⊢ ((𝑈 ∈ Fin ∧ 𝑉 ∈ Fin) → (𝑈 ↑ 𝑉) = ((♯‘(𝑉 ∩ 𝑈)) − (♯‘(𝑉 ∖ 𝑈))))

This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1569   ∈ wcel 2144  ∀wral 3076  {crab 3412   ∖ cdif 4044   ∩ cin 4088  ifcif 4481  𝒫 cpw 4556   class class class wbr 5102   ↦ cmpt 5185   “ cima 5654  ‘cfv 6543  (class class class)co 7424   ∈ cmpo 7426  Fincfn 8980  infcinf 9440  ℝcr 11206  0cc0 11207  1c1 11208   + caddc 11210   < clt 11350   ≤ cle 11351   − cmin 11548   / cdiv 11980  ℕcn 12342  ℤcz 12700  ...cfz 13646  ♯chash 14481

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-sep 5248  ax-nul 5259  ax-pr 5391

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  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-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-sbc 3739  df-ss 3897  df-dif 4046  df-in 4090  df-un 4150  df-nul 4278  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-iota 6497  df-fun 6545  df-fv 6551  df-ov 7427  df-oprab 7428  df-mpo 7429

This theorem is used by:  ballotlemgun  35207  ballotlemfg  35208  ballotlemfrc  35209