Proof of Theorem pthdlem2lem
| Step | Hyp | Ref
| Expression |
| 1 | | pthd.s |
. . . . . 6
⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 2 | 1 | 3ad2ant1 1133 |
. . . . 5
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 3 | | ralcom 3274 |
. . . . . 6
⊢
(∀𝑖 ∈
(0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) ↔ ∀𝑗 ∈ (1..^𝑅)∀𝑖 ∈ (0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 4 | | elfzo1 13734 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑗 ∈ (1..^𝑅) ↔ (𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ ∧ 𝑗 < 𝑅)) |
| 5 | | nnne0 12279 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑗 ∈ ℕ → 𝑗 ≠ 0) |
| 6 | 5 | necomd 2988 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑗 ∈ ℕ → 0 ≠
𝑗) |
| 7 | 6 | 3ad2ant1 1133 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ ∧ 𝑗 < 𝑅) → 0 ≠ 𝑗) |
| 8 | 4, 7 | sylbi 217 |
. . . . . . . . . . . . . . . 16
⊢ (𝑗 ∈ (1..^𝑅) → 0 ≠ 𝑗) |
| 9 | 8 | adantl 481 |
. . . . . . . . . . . . . . 15
⊢
(((♯‘𝑃)
∈ ℕ ∧ 𝑗
∈ (1..^𝑅)) → 0
≠ 𝑗) |
| 10 | | neeq1 2995 |
. . . . . . . . . . . . . . 15
⊢ (𝐼 = 0 → (𝐼 ≠ 𝑗 ↔ 0 ≠ 𝑗)) |
| 11 | 9, 10 | imbitrrid 246 |
. . . . . . . . . . . . . 14
⊢ (𝐼 = 0 →
(((♯‘𝑃) ∈
ℕ ∧ 𝑗 ∈
(1..^𝑅)) → 𝐼 ≠ 𝑗)) |
| 12 | 11 | expd 415 |
. . . . . . . . . . . . 13
⊢ (𝐼 = 0 →
((♯‘𝑃) ∈
ℕ → (𝑗 ∈
(1..^𝑅) → 𝐼 ≠ 𝑗))) |
| 13 | | nnre 12252 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑗 ∈ ℕ → 𝑗 ∈
ℝ) |
| 14 | 13 | adantr 480 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ) → 𝑗 ∈
ℝ) |
| 15 | | nnre 12252 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑅 ∈ ℕ → 𝑅 ∈
ℝ) |
| 16 | 15 | adantl 481 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ) → 𝑅 ∈
ℝ) |
| 17 | 14, 16 | ltlend 11385 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ) → (𝑗 < 𝑅 ↔ (𝑗 ≤ 𝑅 ∧ 𝑅 ≠ 𝑗))) |
| 18 | | simpr 484 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝑗 ≤ 𝑅 ∧ 𝑅 ≠ 𝑗) → 𝑅 ≠ 𝑗) |
| 19 | 17, 18 | biimtrdi 253 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ) → (𝑗 < 𝑅 → 𝑅 ≠ 𝑗)) |
| 20 | 19 | 3impia 1117 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝑗 ∈ ℕ ∧ 𝑅 ∈ ℕ ∧ 𝑗 < 𝑅) → 𝑅 ≠ 𝑗) |
| 21 | 4, 20 | sylbi 217 |
. . . . . . . . . . . . . . . 16
⊢ (𝑗 ∈ (1..^𝑅) → 𝑅 ≠ 𝑗) |
| 22 | 21 | adantl 481 |
. . . . . . . . . . . . . . 15
⊢
(((♯‘𝑃)
∈ ℕ ∧ 𝑗
∈ (1..^𝑅)) →
𝑅 ≠ 𝑗) |
| 23 | | neeq1 2995 |
. . . . . . . . . . . . . . 15
⊢ (𝐼 = 𝑅 → (𝐼 ≠ 𝑗 ↔ 𝑅 ≠ 𝑗)) |
| 24 | 22, 23 | imbitrrid 246 |
. . . . . . . . . . . . . 14
⊢ (𝐼 = 𝑅 → (((♯‘𝑃) ∈ ℕ ∧ 𝑗 ∈ (1..^𝑅)) → 𝐼 ≠ 𝑗)) |
| 25 | 24 | expd 415 |
. . . . . . . . . . . . 13
⊢ (𝐼 = 𝑅 → ((♯‘𝑃) ∈ ℕ → (𝑗 ∈ (1..^𝑅) → 𝐼 ≠ 𝑗))) |
| 26 | 12, 25 | jaoi 857 |
. . . . . . . . . . . 12
⊢ ((𝐼 = 0 ∨ 𝐼 = 𝑅) → ((♯‘𝑃) ∈ ℕ → (𝑗 ∈ (1..^𝑅) → 𝐼 ≠ 𝑗))) |
| 27 | 26 | impcom 407 |
. . . . . . . . . . 11
⊢
(((♯‘𝑃)
∈ ℕ ∧ (𝐼 = 0
∨ 𝐼 = 𝑅)) → (𝑗 ∈ (1..^𝑅) → 𝐼 ≠ 𝑗)) |
| 28 | 27 | 3adant1 1130 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → (𝑗 ∈ (1..^𝑅) → 𝐼 ≠ 𝑗)) |
| 29 | 28 | imp 406 |
. . . . . . . . 9
⊢ (((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) ∧ 𝑗 ∈ (1..^𝑅)) → 𝐼 ≠ 𝑗) |
| 30 | | lbfzo0 13721 |
. . . . . . . . . . . . . . . 16
⊢ (0 ∈
(0..^(♯‘𝑃))
↔ (♯‘𝑃)
∈ ℕ) |
| 31 | 30 | biimpri 228 |
. . . . . . . . . . . . . . 15
⊢
((♯‘𝑃)
∈ ℕ → 0 ∈ (0..^(♯‘𝑃))) |
| 32 | | eleq1 2823 |
. . . . . . . . . . . . . . 15
⊢ (𝐼 = 0 → (𝐼 ∈ (0..^(♯‘𝑃)) ↔ 0 ∈
(0..^(♯‘𝑃)))) |
| 33 | 31, 32 | imbitrrid 246 |
. . . . . . . . . . . . . 14
⊢ (𝐼 = 0 →
((♯‘𝑃) ∈
ℕ → 𝐼 ∈
(0..^(♯‘𝑃)))) |
| 34 | | pthd.r |
. . . . . . . . . . . . . . . 16
⊢ 𝑅 = ((♯‘𝑃) − 1) |
| 35 | | fzo0end 13779 |
. . . . . . . . . . . . . . . 16
⊢
((♯‘𝑃)
∈ ℕ → ((♯‘𝑃) − 1) ∈
(0..^(♯‘𝑃))) |
| 36 | 34, 35 | eqeltrid 2839 |
. . . . . . . . . . . . . . 15
⊢
((♯‘𝑃)
∈ ℕ → 𝑅
∈ (0..^(♯‘𝑃))) |
| 37 | | eleq1 2823 |
. . . . . . . . . . . . . . 15
⊢ (𝐼 = 𝑅 → (𝐼 ∈ (0..^(♯‘𝑃)) ↔ 𝑅 ∈ (0..^(♯‘𝑃)))) |
| 38 | 36, 37 | imbitrrid 246 |
. . . . . . . . . . . . . 14
⊢ (𝐼 = 𝑅 → ((♯‘𝑃) ∈ ℕ → 𝐼 ∈ (0..^(♯‘𝑃)))) |
| 39 | 33, 38 | jaoi 857 |
. . . . . . . . . . . . 13
⊢ ((𝐼 = 0 ∨ 𝐼 = 𝑅) → ((♯‘𝑃) ∈ ℕ → 𝐼 ∈ (0..^(♯‘𝑃)))) |
| 40 | 39 | impcom 407 |
. . . . . . . . . . . 12
⊢
(((♯‘𝑃)
∈ ℕ ∧ (𝐼 = 0
∨ 𝐼 = 𝑅)) → 𝐼 ∈ (0..^(♯‘𝑃))) |
| 41 | 40 | 3adant1 1130 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → 𝐼 ∈ (0..^(♯‘𝑃))) |
| 42 | 41 | adantr 480 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) ∧ 𝑗 ∈ (1..^𝑅)) → 𝐼 ∈ (0..^(♯‘𝑃))) |
| 43 | | neeq1 2995 |
. . . . . . . . . . . 12
⊢ (𝑖 = 𝐼 → (𝑖 ≠ 𝑗 ↔ 𝐼 ≠ 𝑗)) |
| 44 | | fveq2 6881 |
. . . . . . . . . . . . 13
⊢ (𝑖 = 𝐼 → (𝑃‘𝑖) = (𝑃‘𝐼)) |
| 45 | 44 | neeq1d 2992 |
. . . . . . . . . . . 12
⊢ (𝑖 = 𝐼 → ((𝑃‘𝑖) ≠ (𝑃‘𝑗) ↔ (𝑃‘𝐼) ≠ (𝑃‘𝑗))) |
| 46 | 43, 45 | imbi12d 344 |
. . . . . . . . . . 11
⊢ (𝑖 = 𝐼 → ((𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) ↔ (𝐼 ≠ 𝑗 → (𝑃‘𝐼) ≠ (𝑃‘𝑗)))) |
| 47 | 46 | rspcv 3602 |
. . . . . . . . . 10
⊢ (𝐼 ∈
(0..^(♯‘𝑃))
→ (∀𝑖 ∈
(0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → (𝐼 ≠ 𝑗 → (𝑃‘𝐼) ≠ (𝑃‘𝑗)))) |
| 48 | 42, 47 | syl 17 |
. . . . . . . . 9
⊢ (((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) ∧ 𝑗 ∈ (1..^𝑅)) → (∀𝑖 ∈ (0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → (𝐼 ≠ 𝑗 → (𝑃‘𝐼) ≠ (𝑃‘𝑗)))) |
| 49 | 29, 48 | mpid 44 |
. . . . . . . 8
⊢ (((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) ∧ 𝑗 ∈ (1..^𝑅)) → (∀𝑖 ∈ (0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → (𝑃‘𝐼) ≠ (𝑃‘𝑗))) |
| 50 | | nesym 2989 |
. . . . . . . 8
⊢ ((𝑃‘𝐼) ≠ (𝑃‘𝑗) ↔ ¬ (𝑃‘𝑗) = (𝑃‘𝐼)) |
| 51 | 49, 50 | imbitrdi 251 |
. . . . . . 7
⊢ (((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) ∧ 𝑗 ∈ (1..^𝑅)) → (∀𝑖 ∈ (0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → ¬ (𝑃‘𝑗) = (𝑃‘𝐼))) |
| 52 | 51 | ralimdva 3153 |
. . . . . 6
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → (∀𝑗 ∈ (1..^𝑅)∀𝑖 ∈ (0..^(♯‘𝑃))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → ∀𝑗 ∈ (1..^𝑅) ¬ (𝑃‘𝑗) = (𝑃‘𝐼))) |
| 53 | 3, 52 | biimtrid 242 |
. . . . 5
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → (∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) → ∀𝑗 ∈ (1..^𝑅) ¬ (𝑃‘𝑗) = (𝑃‘𝐼))) |
| 54 | 2, 53 | mpd 15 |
. . . 4
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → ∀𝑗 ∈ (1..^𝑅) ¬ (𝑃‘𝑗) = (𝑃‘𝐼)) |
| 55 | | ralnex 3063 |
. . . 4
⊢
(∀𝑗 ∈
(1..^𝑅) ¬ (𝑃‘𝑗) = (𝑃‘𝐼) ↔ ¬ ∃𝑗 ∈ (1..^𝑅)(𝑃‘𝑗) = (𝑃‘𝐼)) |
| 56 | 54, 55 | sylib 218 |
. . 3
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → ¬ ∃𝑗 ∈ (1..^𝑅)(𝑃‘𝑗) = (𝑃‘𝐼)) |
| 57 | | pthd.p |
. . . . . 6
⊢ (𝜑 → 𝑃 ∈ Word V) |
| 58 | | wrdf 14541 |
. . . . . 6
⊢ (𝑃 ∈ Word V → 𝑃:(0..^(♯‘𝑃))⟶V) |
| 59 | | ffun 6714 |
. . . . . 6
⊢ (𝑃:(0..^(♯‘𝑃))⟶V → Fun 𝑃) |
| 60 | 57, 58, 59 | 3syl 18 |
. . . . 5
⊢ (𝜑 → Fun 𝑃) |
| 61 | 60 | 3ad2ant1 1133 |
. . . 4
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → Fun 𝑃) |
| 62 | | fvelima 6949 |
. . . . 5
⊢ ((Fun
𝑃 ∧ (𝑃‘𝐼) ∈ (𝑃 “ (1..^𝑅))) → ∃𝑗 ∈ (1..^𝑅)(𝑃‘𝑗) = (𝑃‘𝐼)) |
| 63 | 62 | ex 412 |
. . . 4
⊢ (Fun
𝑃 → ((𝑃‘𝐼) ∈ (𝑃 “ (1..^𝑅)) → ∃𝑗 ∈ (1..^𝑅)(𝑃‘𝑗) = (𝑃‘𝐼))) |
| 64 | 61, 63 | syl 17 |
. . 3
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → ((𝑃‘𝐼) ∈ (𝑃 “ (1..^𝑅)) → ∃𝑗 ∈ (1..^𝑅)(𝑃‘𝑗) = (𝑃‘𝐼))) |
| 65 | 56, 64 | mtod 198 |
. 2
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → ¬ (𝑃‘𝐼) ∈ (𝑃 “ (1..^𝑅))) |
| 66 | | df-nel 3038 |
. 2
⊢ ((𝑃‘𝐼) ∉ (𝑃 “ (1..^𝑅)) ↔ ¬ (𝑃‘𝐼) ∈ (𝑃 “ (1..^𝑅))) |
| 67 | 65, 66 | sylibr 234 |
1
⊢ ((𝜑 ∧ (♯‘𝑃) ∈ ℕ ∧ (𝐼 = 0 ∨ 𝐼 = 𝑅)) → (𝑃‘𝐼) ∉ (𝑃 “ (1..^𝑅))) |