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Theorem ballotlemfc0 34474
Description: 𝐹 takes value 0 between negative and positive values. (Contributed by Thierry Arnoux, 24-Nov-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)))))
ballotlemfp1.c (𝜑𝐶𝑂)
ballotlemfp1.j (𝜑𝐽 ∈ ℕ)
ballotlemfc0.3 (𝜑 → ∃𝑖 ∈ (1...𝐽)((𝐹𝐶)‘𝑖) ≤ 0)
ballotlemfc0.4 (𝜑 → 0 < ((𝐹𝐶)‘𝐽))
Assertion
Ref Expression
ballotlemfc0 (𝜑 → ∃𝑘 ∈ (1...𝐽)((𝐹𝐶)‘𝑘) = 0)
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,𝐹   𝐶,𝑖   𝑖,𝐽   𝜑,𝑖,𝑘   𝑘,𝐽   𝐶,𝑘   𝜑,𝑘
Allowed substitution hints:   𝜑(𝑥,𝑐)   𝐶(𝑥,𝑐)   𝑃(𝑥,𝑖,𝑘,𝑐)   𝐹(𝑥)   𝐽(𝑥,𝑐)   𝑀(𝑥)   𝑁(𝑥)   𝑂(𝑥)

Proof of Theorem ballotlemfc0
Dummy variable 𝑗 is distinct from all other variables.
StepHypRef Expression
1 fveq2 6816 . . . . . . 7 (𝑖 = 𝑘 → ((𝐹𝐶)‘𝑖) = ((𝐹𝐶)‘𝑘))
21breq1d 5098 . . . . . 6 (𝑖 = 𝑘 → (((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘𝑘) ≤ 0))
32elrab 3644 . . . . 5 (𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ↔ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0))
43anbi1i 624 . . . 4 ((𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘) ↔ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘))
5 simprlr 779 . . . . 5 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘𝑘) ≤ 0)
6 simprl 770 . . . . . . . . . 10 ((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) → 𝑘 ∈ (1...𝐽))
76adantrr 717 . . . . . . . . 9 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → 𝑘 ∈ (1...𝐽))
8 fzssuz 13456 . . . . . . . . . . . . . 14 (1...𝐽) ⊆ (ℤ‘1)
9 uzssz 12744 . . . . . . . . . . . . . 14 (ℤ‘1) ⊆ ℤ
108, 9sstri 3941 . . . . . . . . . . . . 13 (1...𝐽) ⊆ ℤ
11 zssre 12466 . . . . . . . . . . . . 13 ℤ ⊆ ℝ
1210, 11sstri 3941 . . . . . . . . . . . 12 (1...𝐽) ⊆ ℝ
1312sseli 3927 . . . . . . . . . . 11 (𝑘 ∈ (1...𝐽) → 𝑘 ∈ ℝ)
1413ltp1d 12043 . . . . . . . . . 10 (𝑘 ∈ (1...𝐽) → 𝑘 < (𝑘 + 1))
15 1red 11104 . . . . . . . . . . . 12 (𝑘 ∈ (1...𝐽) → 1 ∈ ℝ)
1613, 15readdcld 11132 . . . . . . . . . . 11 (𝑘 ∈ (1...𝐽) → (𝑘 + 1) ∈ ℝ)
1713, 16ltnled 11251 . . . . . . . . . 10 (𝑘 ∈ (1...𝐽) → (𝑘 < (𝑘 + 1) ↔ ¬ (𝑘 + 1) ≤ 𝑘))
1814, 17mpbid 232 . . . . . . . . 9 (𝑘 ∈ (1...𝐽) → ¬ (𝑘 + 1) ≤ 𝑘)
197, 18syl 17 . . . . . . . 8 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ¬ (𝑘 + 1) ≤ 𝑘)
20 simprr 772 . . . . . . . . 9 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)
21 ballotlemfc0.4 . . . . . . . . . . . . . . . 16 (𝜑 → 0 < ((𝐹𝐶)‘𝐽))
2221adantr 480 . . . . . . . . . . . . . . 15 ((𝜑𝑘 = 𝐽) → 0 < ((𝐹𝐶)‘𝐽))
23 simpr 484 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑘 = 𝐽) → 𝑘 = 𝐽)
2423fveq2d 6820 . . . . . . . . . . . . . . . . 17 ((𝜑𝑘 = 𝐽) → ((𝐹𝐶)‘𝑘) = ((𝐹𝐶)‘𝐽))
2524breq2d 5100 . . . . . . . . . . . . . . . 16 ((𝜑𝑘 = 𝐽) → (0 < ((𝐹𝐶)‘𝑘) ↔ 0 < ((𝐹𝐶)‘𝐽)))
26 ballotlemfp1.j . . . . . . . . . . . . . . . . . . . . . 22 (𝜑𝐽 ∈ ℕ)
27 elnnuz 12767 . . . . . . . . . . . . . . . . . . . . . 22 (𝐽 ∈ ℕ ↔ 𝐽 ∈ (ℤ‘1))
2826, 27sylib 218 . . . . . . . . . . . . . . . . . . . . 21 (𝜑𝐽 ∈ (ℤ‘1))
29 eluzfz2 13423 . . . . . . . . . . . . . . . . . . . . 21 (𝐽 ∈ (ℤ‘1) → 𝐽 ∈ (1...𝐽))
3028, 29syl 17 . . . . . . . . . . . . . . . . . . . 20 (𝜑𝐽 ∈ (1...𝐽))
31 eleq1 2816 . . . . . . . . . . . . . . . . . . . 20 (𝑘 = 𝐽 → (𝑘 ∈ (1...𝐽) ↔ 𝐽 ∈ (1...𝐽)))
3230, 31syl5ibrcom 247 . . . . . . . . . . . . . . . . . . 19 (𝜑 → (𝑘 = 𝐽𝑘 ∈ (1...𝐽)))
3332anc2li 555 . . . . . . . . . . . . . . . . . 18 (𝜑 → (𝑘 = 𝐽 → (𝜑𝑘 ∈ (1...𝐽))))
34 1eluzge0 12769 . . . . . . . . . . . . . . . . . . . 20 1 ∈ (ℤ‘0)
35 fzss1 13454 . . . . . . . . . . . . . . . . . . . . 21 (1 ∈ (ℤ‘0) → (1...𝐽) ⊆ (0...𝐽))
3635sseld 3930 . . . . . . . . . . . . . . . . . . . 20 (1 ∈ (ℤ‘0) → (𝑘 ∈ (1...𝐽) → 𝑘 ∈ (0...𝐽)))
3734, 36ax-mp 5 . . . . . . . . . . . . . . . . . . 19 (𝑘 ∈ (1...𝐽) → 𝑘 ∈ (0...𝐽))
38 0red 11106 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑘 ∈ (0...𝐽)) → 0 ∈ ℝ)
39 ballotth.m . . . . . . . . . . . . . . . . . . . . . 22 𝑀 ∈ ℕ
40 ballotth.n . . . . . . . . . . . . . . . . . . . . . 22 𝑁 ∈ ℕ
41 ballotth.o . . . . . . . . . . . . . . . . . . . . . 22 𝑂 = {𝑐 ∈ 𝒫 (1...(𝑀 + 𝑁)) ∣ (♯‘𝑐) = 𝑀}
42 ballotth.p . . . . . . . . . . . . . . . . . . . . . 22 𝑃 = (𝑥 ∈ 𝒫 𝑂 ↦ ((♯‘𝑥) / (♯‘𝑂)))
43 ballotth.f . . . . . . . . . . . . . . . . . . . . . 22 𝐹 = (𝑐𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐)))))
44 ballotlemfp1.c . . . . . . . . . . . . . . . . . . . . . . 23 (𝜑𝐶𝑂)
4544adantr 480 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑𝑘 ∈ (0...𝐽)) → 𝐶𝑂)
46 elfzelz 13415 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑘 ∈ (0...𝐽) → 𝑘 ∈ ℤ)
4746adantl 481 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑𝑘 ∈ (0...𝐽)) → 𝑘 ∈ ℤ)
4839, 40, 41, 42, 43, 45, 47ballotlemfelz 34472 . . . . . . . . . . . . . . . . . . . . 21 ((𝜑𝑘 ∈ (0...𝐽)) → ((𝐹𝐶)‘𝑘) ∈ ℤ)
4948zred 12568 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑘 ∈ (0...𝐽)) → ((𝐹𝐶)‘𝑘) ∈ ℝ)
5038, 49ltnled 11251 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑘 ∈ (0...𝐽)) → (0 < ((𝐹𝐶)‘𝑘) ↔ ¬ ((𝐹𝐶)‘𝑘) ≤ 0))
5137, 50sylan2 593 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑘 ∈ (1...𝐽)) → (0 < ((𝐹𝐶)‘𝑘) ↔ ¬ ((𝐹𝐶)‘𝑘) ≤ 0))
5233, 51syl6 35 . . . . . . . . . . . . . . . . 17 (𝜑 → (𝑘 = 𝐽 → (0 < ((𝐹𝐶)‘𝑘) ↔ ¬ ((𝐹𝐶)‘𝑘) ≤ 0)))
5352imp 406 . . . . . . . . . . . . . . . 16 ((𝜑𝑘 = 𝐽) → (0 < ((𝐹𝐶)‘𝑘) ↔ ¬ ((𝐹𝐶)‘𝑘) ≤ 0))
5425, 53bitr3d 281 . . . . . . . . . . . . . . 15 ((𝜑𝑘 = 𝐽) → (0 < ((𝐹𝐶)‘𝐽) ↔ ¬ ((𝐹𝐶)‘𝑘) ≤ 0))
5522, 54mpbid 232 . . . . . . . . . . . . . 14 ((𝜑𝑘 = 𝐽) → ¬ ((𝐹𝐶)‘𝑘) ≤ 0)
5655ex 412 . . . . . . . . . . . . 13 (𝜑 → (𝑘 = 𝐽 → ¬ ((𝐹𝐶)‘𝑘) ≤ 0))
5756con2d 134 . . . . . . . . . . . 12 (𝜑 → (((𝐹𝐶)‘𝑘) ≤ 0 → ¬ 𝑘 = 𝐽))
58 nn1m1nn 12137 . . . . . . . . . . . . . . . . . . . . 21 (𝐽 ∈ ℕ → (𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ))
5926, 58syl 17 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → (𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ))
60 ballotlemfc0.3 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → ∃𝑖 ∈ (1...𝐽)((𝐹𝐶)‘𝑖) ≤ 0)
6160adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑𝐽 = 1) → ∃𝑖 ∈ (1...𝐽)((𝐹𝐶)‘𝑖) ≤ 0)
62 oveq1 7347 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝐽 = 1 → (𝐽...𝐽) = (1...𝐽))
6362adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝜑𝐽 = 1) → (𝐽...𝐽) = (1...𝐽))
6426nnzd 12486 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝜑𝐽 ∈ ℤ)
65 fzsn 13457 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝐽 ∈ ℤ → (𝐽...𝐽) = {𝐽})
6664, 65syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝜑 → (𝐽...𝐽) = {𝐽})
6766adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝜑𝐽 = 1) → (𝐽...𝐽) = {𝐽})
6863, 67eqtr3d 2766 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑𝐽 = 1) → (1...𝐽) = {𝐽})
6961, 68rexeqtrdv 3292 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝐽 = 1) → ∃𝑖 ∈ {𝐽} ((𝐹𝐶)‘𝑖) ≤ 0)
70 fveq2 6816 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑖 = 𝐽 → ((𝐹𝐶)‘𝑖) = ((𝐹𝐶)‘𝐽))
7170breq1d 5098 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑖 = 𝐽 → (((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘𝐽) ≤ 0))
7271rexsng 4626 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝐽 ∈ ℕ → (∃𝑖 ∈ {𝐽} ((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘𝐽) ≤ 0))
7326, 72syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝜑 → (∃𝑖 ∈ {𝐽} ((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘𝐽) ≤ 0))
7473adantr 480 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝐽 = 1) → (∃𝑖 ∈ {𝐽} ((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘𝐽) ≤ 0))
7569, 74mpbid 232 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑𝐽 = 1) → ((𝐹𝐶)‘𝐽) ≤ 0)
7621adantr 480 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝐽 = 1) → 0 < ((𝐹𝐶)‘𝐽))
77 0red 11106 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → 0 ∈ ℝ)
7839, 40, 41, 42, 43, 44, 64ballotlemfelz 34472 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝜑 → ((𝐹𝐶)‘𝐽) ∈ ℤ)
7978zred 12568 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → ((𝐹𝐶)‘𝐽) ∈ ℝ)
8077, 79ltnled 11251 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝜑 → (0 < ((𝐹𝐶)‘𝐽) ↔ ¬ ((𝐹𝐶)‘𝐽) ≤ 0))
8180adantr 480 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝐽 = 1) → (0 < ((𝐹𝐶)‘𝐽) ↔ ¬ ((𝐹𝐶)‘𝐽) ≤ 0))
8276, 81mpbid 232 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑𝐽 = 1) → ¬ ((𝐹𝐶)‘𝐽) ≤ 0)
8375, 82pm2.65da 816 . . . . . . . . . . . . . . . . . . . . . 22 (𝜑 → ¬ 𝐽 = 1)
84 biortn 937 . . . . . . . . . . . . . . . . . . . . . 22 𝐽 = 1 → ((𝐽 − 1) ∈ ℕ ↔ (¬ ¬ 𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ)))
8583, 84syl 17 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → ((𝐽 − 1) ∈ ℕ ↔ (¬ ¬ 𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ)))
86 notnotb 315 . . . . . . . . . . . . . . . . . . . . . 22 (𝐽 = 1 ↔ ¬ ¬ 𝐽 = 1)
8786orbi1i 913 . . . . . . . . . . . . . . . . . . . . 21 ((𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ) ↔ (¬ ¬ 𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ))
8885, 87bitr4di 289 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → ((𝐽 − 1) ∈ ℕ ↔ (𝐽 = 1 ∨ (𝐽 − 1) ∈ ℕ)))
8959, 88mpbird 257 . . . . . . . . . . . . . . . . . . 19 (𝜑 → (𝐽 − 1) ∈ ℕ)
90 elnnuz 12767 . . . . . . . . . . . . . . . . . . 19 ((𝐽 − 1) ∈ ℕ ↔ (𝐽 − 1) ∈ (ℤ‘1))
9189, 90sylib 218 . . . . . . . . . . . . . . . . . 18 (𝜑 → (𝐽 − 1) ∈ (ℤ‘1))
92 elfzp1 13465 . . . . . . . . . . . . . . . . . 18 ((𝐽 − 1) ∈ (ℤ‘1) → (𝑘 ∈ (1...((𝐽 − 1) + 1)) ↔ (𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = ((𝐽 − 1) + 1))))
9391, 92syl 17 . . . . . . . . . . . . . . . . 17 (𝜑 → (𝑘 ∈ (1...((𝐽 − 1) + 1)) ↔ (𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = ((𝐽 − 1) + 1))))
9426nncnd 12132 . . . . . . . . . . . . . . . . . . . 20 (𝜑𝐽 ∈ ℂ)
95 1cnd 11098 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → 1 ∈ ℂ)
9694, 95npcand 11467 . . . . . . . . . . . . . . . . . . 19 (𝜑 → ((𝐽 − 1) + 1) = 𝐽)
9796oveq2d 7356 . . . . . . . . . . . . . . . . . 18 (𝜑 → (1...((𝐽 − 1) + 1)) = (1...𝐽))
9897eleq2d 2814 . . . . . . . . . . . . . . . . 17 (𝜑 → (𝑘 ∈ (1...((𝐽 − 1) + 1)) ↔ 𝑘 ∈ (1...𝐽)))
9996eqeq2d 2740 . . . . . . . . . . . . . . . . . 18 (𝜑 → (𝑘 = ((𝐽 − 1) + 1) ↔ 𝑘 = 𝐽))
10099orbi2d 915 . . . . . . . . . . . . . . . . 17 (𝜑 → ((𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = ((𝐽 − 1) + 1)) ↔ (𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = 𝐽)))
10193, 98, 1003bitr3d 309 . . . . . . . . . . . . . . . 16 (𝜑 → (𝑘 ∈ (1...𝐽) ↔ (𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = 𝐽)))
102 orcom 870 . . . . . . . . . . . . . . . 16 ((𝑘 ∈ (1...(𝐽 − 1)) ∨ 𝑘 = 𝐽) ↔ (𝑘 = 𝐽𝑘 ∈ (1...(𝐽 − 1))))
103101, 102bitrdi 287 . . . . . . . . . . . . . . 15 (𝜑 → (𝑘 ∈ (1...𝐽) ↔ (𝑘 = 𝐽𝑘 ∈ (1...(𝐽 − 1)))))
104103biimpd 229 . . . . . . . . . . . . . 14 (𝜑 → (𝑘 ∈ (1...𝐽) → (𝑘 = 𝐽𝑘 ∈ (1...(𝐽 − 1)))))
105 pm5.6 1003 . . . . . . . . . . . . . 14 (((𝑘 ∈ (1...𝐽) ∧ ¬ 𝑘 = 𝐽) → 𝑘 ∈ (1...(𝐽 − 1))) ↔ (𝑘 ∈ (1...𝐽) → (𝑘 = 𝐽𝑘 ∈ (1...(𝐽 − 1)))))
106104, 105sylibr 234 . . . . . . . . . . . . 13 (𝜑 → ((𝑘 ∈ (1...𝐽) ∧ ¬ 𝑘 = 𝐽) → 𝑘 ∈ (1...(𝐽 − 1))))
10789nnzd 12486 . . . . . . . . . . . . . . . . . . 19 (𝜑 → (𝐽 − 1) ∈ ℤ)
108 1z 12493 . . . . . . . . . . . . . . . . . . 19 1 ∈ ℤ
109107, 108jctil 519 . . . . . . . . . . . . . . . . . 18 (𝜑 → (1 ∈ ℤ ∧ (𝐽 − 1) ∈ ℤ))
110 elfzelz 13415 . . . . . . . . . . . . . . . . . . 19 (𝑘 ∈ (1...(𝐽 − 1)) → 𝑘 ∈ ℤ)
111110, 108jctir 520 . . . . . . . . . . . . . . . . . 18 (𝑘 ∈ (1...(𝐽 − 1)) → (𝑘 ∈ ℤ ∧ 1 ∈ ℤ))
112 fzaddel 13449 . . . . . . . . . . . . . . . . . 18 (((1 ∈ ℤ ∧ (𝐽 − 1) ∈ ℤ) ∧ (𝑘 ∈ ℤ ∧ 1 ∈ ℤ)) → (𝑘 ∈ (1...(𝐽 − 1)) ↔ (𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1))))
113109, 111, 112syl2an 596 . . . . . . . . . . . . . . . . 17 ((𝜑𝑘 ∈ (1...(𝐽 − 1))) → (𝑘 ∈ (1...(𝐽 − 1)) ↔ (𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1))))
114113biimp3a 1471 . . . . . . . . . . . . . . . 16 ((𝜑𝑘 ∈ (1...(𝐽 − 1)) ∧ 𝑘 ∈ (1...(𝐽 − 1))) → (𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1)))
1151143anidm23 1423 . . . . . . . . . . . . . . 15 ((𝜑𝑘 ∈ (1...(𝐽 − 1))) → (𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1)))
116 1p1e2 12236 . . . . . . . . . . . . . . . . . . . 20 (1 + 1) = 2
117116a1i 11 . . . . . . . . . . . . . . . . . . 19 (𝜑 → (1 + 1) = 2)
118117, 96oveq12d 7358 . . . . . . . . . . . . . . . . . 18 (𝜑 → ((1 + 1)...((𝐽 − 1) + 1)) = (2...𝐽))
119118eleq2d 2814 . . . . . . . . . . . . . . . . 17 (𝜑 → ((𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1)) ↔ (𝑘 + 1) ∈ (2...𝐽)))
120 2eluzge1 12771 . . . . . . . . . . . . . . . . . . 19 2 ∈ (ℤ‘1)
121 fzss1 13454 . . . . . . . . . . . . . . . . . . 19 (2 ∈ (ℤ‘1) → (2...𝐽) ⊆ (1...𝐽))
122120, 121ax-mp 5 . . . . . . . . . . . . . . . . . 18 (2...𝐽) ⊆ (1...𝐽)
123122sseli 3927 . . . . . . . . . . . . . . . . 17 ((𝑘 + 1) ∈ (2...𝐽) → (𝑘 + 1) ∈ (1...𝐽))
124119, 123biimtrdi 253 . . . . . . . . . . . . . . . 16 (𝜑 → ((𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1)) → (𝑘 + 1) ∈ (1...𝐽)))
125124adantr 480 . . . . . . . . . . . . . . 15 ((𝜑𝑘 ∈ (1...(𝐽 − 1))) → ((𝑘 + 1) ∈ ((1 + 1)...((𝐽 − 1) + 1)) → (𝑘 + 1) ∈ (1...𝐽)))
126115, 125mpd 15 . . . . . . . . . . . . . 14 ((𝜑𝑘 ∈ (1...(𝐽 − 1))) → (𝑘 + 1) ∈ (1...𝐽))
127126ex 412 . . . . . . . . . . . . 13 (𝜑 → (𝑘 ∈ (1...(𝐽 − 1)) → (𝑘 + 1) ∈ (1...𝐽)))
128106, 127syld 47 . . . . . . . . . . . 12 (𝜑 → ((𝑘 ∈ (1...𝐽) ∧ ¬ 𝑘 = 𝐽) → (𝑘 + 1) ∈ (1...𝐽)))
12957, 128sylan2d 605 . . . . . . . . . . 11 (𝜑 → ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) → (𝑘 + 1) ∈ (1...𝐽)))
130129imp 406 . . . . . . . . . 10 ((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) → (𝑘 + 1) ∈ (1...𝐽))
131130adantrr 717 . . . . . . . . 9 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (𝑘 + 1) ∈ (1...𝐽))
132 fveq2 6816 . . . . . . . . . . . . . 14 (𝑖 = (𝑘 + 1) → ((𝐹𝐶)‘𝑖) = ((𝐹𝐶)‘(𝑘 + 1)))
133132breq1d 5098 . . . . . . . . . . . . 13 (𝑖 = (𝑘 + 1) → (((𝐹𝐶)‘𝑖) ≤ 0 ↔ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0))
134133elrab 3644 . . . . . . . . . . . 12 ((𝑘 + 1) ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ↔ ((𝑘 + 1) ∈ (1...𝐽) ∧ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0))
135 breq1 5091 . . . . . . . . . . . . 13 (𝑗 = (𝑘 + 1) → (𝑗𝑘 ↔ (𝑘 + 1) ≤ 𝑘))
136135rspccva 3573 . . . . . . . . . . . 12 ((∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘 ∧ (𝑘 + 1) ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}) → (𝑘 + 1) ≤ 𝑘)
137134, 136sylan2br 595 . . . . . . . . . . 11 ((∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘 ∧ ((𝑘 + 1) ∈ (1...𝐽) ∧ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0)) → (𝑘 + 1) ≤ 𝑘)
138137expr 456 . . . . . . . . . 10 ((∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘 ∧ (𝑘 + 1) ∈ (1...𝐽)) → (((𝐹𝐶)‘(𝑘 + 1)) ≤ 0 → (𝑘 + 1) ≤ 𝑘))
139138con3d 152 . . . . . . . . 9 ((∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘 ∧ (𝑘 + 1) ∈ (1...𝐽)) → (¬ (𝑘 + 1) ≤ 𝑘 → ¬ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0))
14020, 131, 139syl2anc 584 . . . . . . . 8 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (¬ (𝑘 + 1) ≤ 𝑘 → ¬ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0))
14119, 140mpd 15 . . . . . . 7 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ¬ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0)
142 simplrr 777 . . . . . . . . . . 11 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)
143131adantr 480 . . . . . . . . . . 11 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (𝑘 + 1) ∈ (1...𝐽))
144 simpll 766 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → 𝜑)
145130adantr 480 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (𝑘 + 1) ∈ (1...𝐽))
14635sseld 3930 . . . . . . . . . . . . . . 15 (1 ∈ (ℤ‘0) → ((𝑘 + 1) ∈ (1...𝐽) → (𝑘 + 1) ∈ (0...𝐽)))
14734, 145, 146mpsyl 68 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (𝑘 + 1) ∈ (0...𝐽))
14844adantr 480 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ (𝑘 + 1) ∈ (0...𝐽)) → 𝐶𝑂)
149 elfzelz 13415 . . . . . . . . . . . . . . . . 17 ((𝑘 + 1) ∈ (0...𝐽) → (𝑘 + 1) ∈ ℤ)
150149adantl 481 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ (𝑘 + 1) ∈ (0...𝐽)) → (𝑘 + 1) ∈ ℤ)
15139, 40, 41, 42, 43, 148, 150ballotlemfelz 34472 . . . . . . . . . . . . . . 15 ((𝜑 ∧ (𝑘 + 1) ∈ (0...𝐽)) → ((𝐹𝐶)‘(𝑘 + 1)) ∈ ℤ)
152151zred 12568 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑘 + 1) ∈ (0...𝐽)) → ((𝐹𝐶)‘(𝑘 + 1)) ∈ ℝ)
153144, 147, 152syl2anc 584 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) ∈ ℝ)
154 0red 11106 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → 0 ∈ ℝ)
155 simplrr 777 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘𝑘) ≤ 0)
1566adantr 480 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → 𝑘 ∈ (1...𝐽))
157156, 37syl 17 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → 𝑘 ∈ (0...𝐽))
158129imdistani 568 . . . . . . . . . . . . . . . . 17 ((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) → (𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)))
15944adantr 480 . . . . . . . . . . . . . . . . . . . 20 ((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) → 𝐶𝑂)
160 elfznn 13444 . . . . . . . . . . . . . . . . . . . . 21 ((𝑘 + 1) ∈ (1...𝐽) → (𝑘 + 1) ∈ ℕ)
161160adantl 481 . . . . . . . . . . . . . . . . . . . 20 ((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) → (𝑘 + 1) ∈ ℕ)
16239, 40, 41, 42, 43, 159, 161ballotlemfp1 34473 . . . . . . . . . . . . . . . . . . 19 ((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) → ((¬ (𝑘 + 1) ∈ 𝐶 → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1)) ∧ ((𝑘 + 1) ∈ 𝐶 → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1))))
163162simpld 494 . . . . . . . . . . . . . . . . . 18 ((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) → (¬ (𝑘 + 1) ∈ 𝐶 → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1)))
164163imp 406 . . . . . . . . . . . . . . . . 17 (((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1))
165158, 164sylan 580 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1))
166 elfzelz 13415 . . . . . . . . . . . . . . . . . . . . . 22 (𝑘 ∈ (1...𝐽) → 𝑘 ∈ ℤ)
167166zcnd 12569 . . . . . . . . . . . . . . . . . . . . 21 (𝑘 ∈ (1...𝐽) → 𝑘 ∈ ℂ)
168 1cnd 11098 . . . . . . . . . . . . . . . . . . . . 21 (𝑘 ∈ (1...𝐽) → 1 ∈ ℂ)
169167, 168pncand 11464 . . . . . . . . . . . . . . . . . . . 20 (𝑘 ∈ (1...𝐽) → ((𝑘 + 1) − 1) = 𝑘)
170169fveq2d 6820 . . . . . . . . . . . . . . . . . . 19 (𝑘 ∈ (1...𝐽) → ((𝐹𝐶)‘((𝑘 + 1) − 1)) = ((𝐹𝐶)‘𝑘))
171170oveq1d 7355 . . . . . . . . . . . . . . . . . 18 (𝑘 ∈ (1...𝐽) → (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1) = (((𝐹𝐶)‘𝑘) − 1))
172171eqeq2d 2740 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ (1...𝐽) → (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1) ↔ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1)))
173156, 172syl 17 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) − 1) ↔ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1)))
174165, 173mpbid 232 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1))
175 0z 12470 . . . . . . . . . . . . . . . . . 18 0 ∈ ℤ
176 zlem1lt 12515 . . . . . . . . . . . . . . . . . 18 ((((𝐹𝐶)‘𝑘) ∈ ℤ ∧ 0 ∈ ℤ) → (((𝐹𝐶)‘𝑘) ≤ 0 ↔ (((𝐹𝐶)‘𝑘) − 1) < 0))
17748, 175, 176sylancl 586 . . . . . . . . . . . . . . . . 17 ((𝜑𝑘 ∈ (0...𝐽)) → (((𝐹𝐶)‘𝑘) ≤ 0 ↔ (((𝐹𝐶)‘𝑘) − 1) < 0))
178177adantr 480 . . . . . . . . . . . . . . . 16 (((𝜑𝑘 ∈ (0...𝐽)) ∧ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1)) → (((𝐹𝐶)‘𝑘) ≤ 0 ↔ (((𝐹𝐶)‘𝑘) − 1) < 0))
179 breq1 5091 . . . . . . . . . . . . . . . . 17 (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1) → (((𝐹𝐶)‘(𝑘 + 1)) < 0 ↔ (((𝐹𝐶)‘𝑘) − 1) < 0))
180179adantl 481 . . . . . . . . . . . . . . . 16 (((𝜑𝑘 ∈ (0...𝐽)) ∧ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1)) → (((𝐹𝐶)‘(𝑘 + 1)) < 0 ↔ (((𝐹𝐶)‘𝑘) − 1) < 0))
181178, 180bitr4d 282 . . . . . . . . . . . . . . 15 (((𝜑𝑘 ∈ (0...𝐽)) ∧ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) − 1)) → (((𝐹𝐶)‘𝑘) ≤ 0 ↔ ((𝐹𝐶)‘(𝑘 + 1)) < 0))
182144, 157, 174, 181syl21anc 837 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (((𝐹𝐶)‘𝑘) ≤ 0 ↔ ((𝐹𝐶)‘(𝑘 + 1)) < 0))
183155, 182mpbid 232 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) < 0)
184153, 154, 183ltled 11252 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0)
185184adantlrr 721 . . . . . . . . . . 11 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0)
186142, 143, 185, 137syl12anc 836 . . . . . . . . . 10 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → (𝑘 + 1) ≤ 𝑘)
18719adantr 480 . . . . . . . . . 10 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ ¬ (𝑘 + 1) ∈ 𝐶) → ¬ (𝑘 + 1) ≤ 𝑘)
188186, 187condan 817 . . . . . . . . 9 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (𝑘 + 1) ∈ 𝐶)
189162simprd 495 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) → ((𝑘 + 1) ∈ 𝐶 → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1)))
190189imp 406 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑘 + 1) ∈ (1...𝐽)) ∧ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1))
191158, 190sylan 580 . . . . . . . . . . 11 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1))
1926adantr 480 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ (𝑘 + 1) ∈ 𝐶) → 𝑘 ∈ (1...𝐽))
193170oveq1d 7355 . . . . . . . . . . . . 13 (𝑘 ∈ (1...𝐽) → (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1) = (((𝐹𝐶)‘𝑘) + 1))
194193eqeq2d 2740 . . . . . . . . . . . 12 (𝑘 ∈ (1...𝐽) → (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1) ↔ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1)))
195192, 194syl 17 . . . . . . . . . . 11 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ (𝑘 + 1) ∈ 𝐶) → (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘((𝑘 + 1) − 1)) + 1) ↔ ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1)))
196191, 195mpbid 232 . . . . . . . . . 10 (((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) ∧ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1))
197196adantlrr 721 . . . . . . . . 9 (((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) ∧ (𝑘 + 1) ∈ 𝐶) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1))
198188, 197mpdan 687 . . . . . . . 8 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1))
199 breq1 5091 . . . . . . . . 9 (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1) → (((𝐹𝐶)‘(𝑘 + 1)) ≤ 0 ↔ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
200199notbid 318 . . . . . . . 8 (((𝐹𝐶)‘(𝑘 + 1)) = (((𝐹𝐶)‘𝑘) + 1) → (¬ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0 ↔ ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
201198, 200syl 17 . . . . . . 7 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (¬ ((𝐹𝐶)‘(𝑘 + 1)) ≤ 0 ↔ ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
202141, 201mpbid 232 . . . . . 6 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0)
2036, 37syl 17 . . . . . . . . 9 ((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) → 𝑘 ∈ (0...𝐽))
204203, 48syldan 591 . . . . . . . 8 ((𝜑 ∧ (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0)) → ((𝐹𝐶)‘𝑘) ∈ ℤ)
205204adantrr 717 . . . . . . 7 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘𝑘) ∈ ℤ)
206 zleltp1 12514 . . . . . . . . 9 ((0 ∈ ℤ ∧ ((𝐹𝐶)‘𝑘) ∈ ℤ) → (0 ≤ ((𝐹𝐶)‘𝑘) ↔ 0 < (((𝐹𝐶)‘𝑘) + 1)))
207175, 206mpan 690 . . . . . . . 8 (((𝐹𝐶)‘𝑘) ∈ ℤ → (0 ≤ ((𝐹𝐶)‘𝑘) ↔ 0 < (((𝐹𝐶)‘𝑘) + 1)))
208 0red 11106 . . . . . . . . 9 (((𝐹𝐶)‘𝑘) ∈ ℤ → 0 ∈ ℝ)
209 zre 12463 . . . . . . . . . 10 (((𝐹𝐶)‘𝑘) ∈ ℤ → ((𝐹𝐶)‘𝑘) ∈ ℝ)
210 1red 11104 . . . . . . . . . 10 (((𝐹𝐶)‘𝑘) ∈ ℤ → 1 ∈ ℝ)
211209, 210readdcld 11132 . . . . . . . . 9 (((𝐹𝐶)‘𝑘) ∈ ℤ → (((𝐹𝐶)‘𝑘) + 1) ∈ ℝ)
212208, 211ltnled 11251 . . . . . . . 8 (((𝐹𝐶)‘𝑘) ∈ ℤ → (0 < (((𝐹𝐶)‘𝑘) + 1) ↔ ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
213207, 212bitrd 279 . . . . . . 7 (((𝐹𝐶)‘𝑘) ∈ ℤ → (0 ≤ ((𝐹𝐶)‘𝑘) ↔ ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
214205, 213syl 17 . . . . . 6 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (0 ≤ ((𝐹𝐶)‘𝑘) ↔ ¬ (((𝐹𝐶)‘𝑘) + 1) ≤ 0))
215202, 214mpbird 257 . . . . 5 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → 0 ≤ ((𝐹𝐶)‘𝑘))
216205zred 12568 . . . . . 6 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘𝑘) ∈ ℝ)
217 0red 11106 . . . . . 6 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → 0 ∈ ℝ)
218216, 217letri3d 11246 . . . . 5 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → (((𝐹𝐶)‘𝑘) = 0 ↔ (((𝐹𝐶)‘𝑘) ≤ 0 ∧ 0 ≤ ((𝐹𝐶)‘𝑘))))
2195, 215, 218mpbir2and 713 . . . 4 ((𝜑 ∧ ((𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) ≤ 0) ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘𝑘) = 0)
2204, 219sylan2b 594 . . 3 ((𝜑 ∧ (𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∧ ∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)) → ((𝐹𝐶)‘𝑘) = 0)
221 ssrab2 4027 . . . . . 6 {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ⊆ (1...𝐽)
222221, 12sstri 3941 . . . . 5 {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ⊆ ℝ
223222a1i 11 . . . 4 (𝜑 → {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ⊆ ℝ)
224 fzfi 13867 . . . . . 6 (1...𝐽) ∈ Fin
225 ssfi 9076 . . . . . 6 (((1...𝐽) ∈ Fin ∧ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ⊆ (1...𝐽)) → {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∈ Fin)
226224, 221, 225mp2an 692 . . . . 5 {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∈ Fin
227226a1i 11 . . . 4 (𝜑 → {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∈ Fin)
228 rabn0 4336 . . . . 5 ({𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ≠ ∅ ↔ ∃𝑖 ∈ (1...𝐽)((𝐹𝐶)‘𝑖) ≤ 0)
22960, 228sylibr 234 . . . 4 (𝜑 → {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ≠ ∅)
230 fimaxre 12057 . . . 4 (({𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ⊆ ℝ ∧ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∈ Fin ∧ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ≠ ∅) → ∃𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)
231223, 227, 229, 230syl3anc 1373 . . 3 (𝜑 → ∃𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}∀𝑗 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0}𝑗𝑘)
232220, 231reximddv 3145 . 2 (𝜑 → ∃𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ((𝐹𝐶)‘𝑘) = 0)
233 elrabi 3640 . . . 4 (𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} → 𝑘 ∈ (1...𝐽))
234233anim1i 615 . . 3 ((𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ∧ ((𝐹𝐶)‘𝑘) = 0) → (𝑘 ∈ (1...𝐽) ∧ ((𝐹𝐶)‘𝑘) = 0))
235234reximi2 3062 . 2 (∃𝑘 ∈ {𝑖 ∈ (1...𝐽) ∣ ((𝐹𝐶)‘𝑖) ≤ 0} ((𝐹𝐶)‘𝑘) = 0 → ∃𝑘 ∈ (1...𝐽)((𝐹𝐶)‘𝑘) = 0)
236232, 235syl 17 1 (𝜑 → ∃𝑘 ∈ (1...𝐽)((𝐹𝐶)‘𝑘) = 0)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 206  wa 395  wo 847   = wceq 1540  wcel 2109  wne 2925  wral 3044  wrex 3053  {crab 3392  cdif 3896  cin 3898  wss 3899  c0 4280  𝒫 cpw 4547  {csn 4573   class class class wbr 5088  cmpt 5169  cfv 6476  (class class class)co 7340  Fincfn 8863  cr 10996  0cc0 10997  1c1 10998   + caddc 11000   < clt 11137  cle 11138  cmin 11335   / cdiv 11765  cn 12116  2c2 12171  cz 12459  cuz 12723  ...cfz 13398  chash 14225
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 2701  ax-rep 5214  ax-sep 5231  ax-nul 5241  ax-pow 5300  ax-pr 5367  ax-un 7662  ax-cnex 11053  ax-resscn 11054  ax-1cn 11055  ax-icn 11056  ax-addcl 11057  ax-addrcl 11058  ax-mulcl 11059  ax-mulrcl 11060  ax-mulcom 11061  ax-addass 11062  ax-mulass 11063  ax-distr 11064  ax-i2m1 11065  ax-1ne0 11066  ax-1rid 11067  ax-rnegex 11068  ax-rrecex 11069  ax-cnre 11070  ax-pre-lttri 11071  ax-pre-lttrn 11072  ax-pre-ltadd 11073  ax-pre-mulgt0 11074
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 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-reu 3344  df-rab 3393  df-v 3435  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-int 4895  df-iun 4940  df-br 5089  df-opab 5151  df-mpt 5170  df-tr 5196  df-id 5508  df-eprel 5513  df-po 5521  df-so 5522  df-fr 5566  df-we 5568  df-xp 5619  df-rel 5620  df-cnv 5621  df-co 5622  df-dm 5623  df-rn 5624  df-res 5625  df-ima 5626  df-pred 6243  df-ord 6304  df-on 6305  df-lim 6306  df-suc 6307  df-iota 6432  df-fun 6478  df-fn 6479  df-f 6480  df-f1 6481  df-fo 6482  df-f1o 6483  df-fv 6484  df-riota 7297  df-ov 7343  df-oprab 7344  df-mpo 7345  df-om 7791  df-1st 7915  df-2nd 7916  df-frecs 8205  df-wrecs 8236  df-recs 8285  df-rdg 8323  df-1o 8379  df-oadd 8383  df-er 8616  df-en 8864  df-dom 8865  df-sdom 8866  df-fin 8867  df-dju 9785  df-card 9823  df-pnf 11139  df-mnf 11140  df-xr 11141  df-ltxr 11142  df-le 11143  df-sub 11337  df-neg 11338  df-nn 12117  df-2 12179  df-n0 12373  df-z 12460  df-uz 12724  df-fz 13399  df-hash 14226
This theorem is referenced by:  ballotlem5  34481  ballotlemic  34488
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