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Theorem fzto1st 29981
Description: The function moving one element to the first position (and shifting all elements before it) is a permutation. (Contributed by Thierry Arnoux, 21-Aug-2020.)
Hypotheses
Ref Expression
psgnfzto1st.d 𝐷 = (1...𝑁)
psgnfzto1st.p 𝑃 = (𝑖𝐷 ↦ if(𝑖 = 1, 𝐼, if(𝑖𝐼, (𝑖 − 1), 𝑖)))
psgnfzto1st.g 𝐺 = (SymGrp‘𝐷)
psgnfzto1st.b 𝐵 = (Base‘𝐺)
Assertion
Ref Expression
fzto1st (𝐼𝐷𝑃𝐵)
Distinct variable groups:   𝐷,𝑖   𝑖,𝐼   𝑖,𝑁   𝐵,𝑖
Allowed substitution hints:   𝑃(𝑖)   𝐺(𝑖)

Proof of Theorem fzto1st
Dummy variables 𝑚 𝑛 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 elfz1b 12447 . . . . 5 (𝐼 ∈ (1...𝑁) ↔ (𝐼 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ 𝐼𝑁))
21biimpi 206 . . . 4 (𝐼 ∈ (1...𝑁) → (𝐼 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ 𝐼𝑁))
3 psgnfzto1st.d . . . 4 𝐷 = (1...𝑁)
42, 3eleq2s 2748 . . 3 (𝐼𝐷 → (𝐼 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ 𝐼𝑁))
5 3ancoma 1062 . . 3 ((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ ∧ 𝐼𝑁) ↔ (𝐼 ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ 𝐼𝑁))
64, 5sylibr 224 . 2 (𝐼𝐷 → (𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ ∧ 𝐼𝑁))
7 df-3an 1056 . . 3 ((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ ∧ 𝐼𝑁) ↔ ((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ) ∧ 𝐼𝑁))
8 breq1 4688 . . . . . 6 (𝑚 = 1 → (𝑚𝑁 ↔ 1 ≤ 𝑁))
9 simpl 472 . . . . . . . . . 10 ((𝑚 = 1 ∧ 𝑖𝐷) → 𝑚 = 1)
109breq2d 4697 . . . . . . . . . . 11 ((𝑚 = 1 ∧ 𝑖𝐷) → (𝑖𝑚𝑖 ≤ 1))
1110ifbid 4141 . . . . . . . . . 10 ((𝑚 = 1 ∧ 𝑖𝐷) → if(𝑖𝑚, (𝑖 − 1), 𝑖) = if(𝑖 ≤ 1, (𝑖 − 1), 𝑖))
129, 11ifeq12d 4139 . . . . . . . . 9 ((𝑚 = 1 ∧ 𝑖𝐷) → if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖)) = if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖)))
1312mpteq2dva 4777 . . . . . . . 8 (𝑚 = 1 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = (𝑖𝐷 ↦ if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖))))
14 eqid 2651 . . . . . . . . 9 1 = 1
15 eqid 2651 . . . . . . . . . 10 (𝑖𝐷 ↦ if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖))) = (𝑖𝐷 ↦ if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖)))
163, 15fzto1st1 29980 . . . . . . . . 9 (1 = 1 → (𝑖𝐷 ↦ if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖))) = ( I ↾ 𝐷))
1714, 16ax-mp 5 . . . . . . . 8 (𝑖𝐷 ↦ if(𝑖 = 1, 1, if(𝑖 ≤ 1, (𝑖 − 1), 𝑖))) = ( I ↾ 𝐷)
1813, 17syl6eq 2701 . . . . . . 7 (𝑚 = 1 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = ( I ↾ 𝐷))
1918eleq1d 2715 . . . . . 6 (𝑚 = 1 → ((𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵 ↔ ( I ↾ 𝐷) ∈ 𝐵))
208, 19imbi12d 333 . . . . 5 (𝑚 = 1 → ((𝑚𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵) ↔ (1 ≤ 𝑁 → ( I ↾ 𝐷) ∈ 𝐵)))
21 breq1 4688 . . . . . 6 (𝑚 = 𝑛 → (𝑚𝑁𝑛𝑁))
22 simpl 472 . . . . . . . . 9 ((𝑚 = 𝑛𝑖𝐷) → 𝑚 = 𝑛)
2322breq2d 4697 . . . . . . . . . 10 ((𝑚 = 𝑛𝑖𝐷) → (𝑖𝑚𝑖𝑛))
2423ifbid 4141 . . . . . . . . 9 ((𝑚 = 𝑛𝑖𝐷) → if(𝑖𝑚, (𝑖 − 1), 𝑖) = if(𝑖𝑛, (𝑖 − 1), 𝑖))
2522, 24ifeq12d 4139 . . . . . . . 8 ((𝑚 = 𝑛𝑖𝐷) → if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖)) = if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))
2625mpteq2dva 4777 . . . . . . 7 (𝑚 = 𝑛 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))))
2726eleq1d 2715 . . . . . 6 (𝑚 = 𝑛 → ((𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵 ↔ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵))
2821, 27imbi12d 333 . . . . 5 (𝑚 = 𝑛 → ((𝑚𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵) ↔ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)))
29 breq1 4688 . . . . . 6 (𝑚 = (𝑛 + 1) → (𝑚𝑁 ↔ (𝑛 + 1) ≤ 𝑁))
30 simpl 472 . . . . . . . . 9 ((𝑚 = (𝑛 + 1) ∧ 𝑖𝐷) → 𝑚 = (𝑛 + 1))
3130breq2d 4697 . . . . . . . . . 10 ((𝑚 = (𝑛 + 1) ∧ 𝑖𝐷) → (𝑖𝑚𝑖 ≤ (𝑛 + 1)))
3231ifbid 4141 . . . . . . . . 9 ((𝑚 = (𝑛 + 1) ∧ 𝑖𝐷) → if(𝑖𝑚, (𝑖 − 1), 𝑖) = if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))
3330, 32ifeq12d 4139 . . . . . . . 8 ((𝑚 = (𝑛 + 1) ∧ 𝑖𝐷) → if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖)) = if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖)))
3433mpteq2dva 4777 . . . . . . 7 (𝑚 = (𝑛 + 1) → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))))
3534eleq1d 2715 . . . . . 6 (𝑚 = (𝑛 + 1) → ((𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵 ↔ (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) ∈ 𝐵))
3629, 35imbi12d 333 . . . . 5 (𝑚 = (𝑛 + 1) → ((𝑚𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵) ↔ ((𝑛 + 1) ≤ 𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) ∈ 𝐵)))
37 breq1 4688 . . . . . 6 (𝑚 = 𝐼 → (𝑚𝑁𝐼𝑁))
38 simpl 472 . . . . . . . . . 10 ((𝑚 = 𝐼𝑖𝐷) → 𝑚 = 𝐼)
3938breq2d 4697 . . . . . . . . . . 11 ((𝑚 = 𝐼𝑖𝐷) → (𝑖𝑚𝑖𝐼))
4039ifbid 4141 . . . . . . . . . 10 ((𝑚 = 𝐼𝑖𝐷) → if(𝑖𝑚, (𝑖 − 1), 𝑖) = if(𝑖𝐼, (𝑖 − 1), 𝑖))
4138, 40ifeq12d 4139 . . . . . . . . 9 ((𝑚 = 𝐼𝑖𝐷) → if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖)) = if(𝑖 = 1, 𝐼, if(𝑖𝐼, (𝑖 − 1), 𝑖)))
4241mpteq2dva 4777 . . . . . . . 8 (𝑚 = 𝐼 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = (𝑖𝐷 ↦ if(𝑖 = 1, 𝐼, if(𝑖𝐼, (𝑖 − 1), 𝑖))))
43 psgnfzto1st.p . . . . . . . 8 𝑃 = (𝑖𝐷 ↦ if(𝑖 = 1, 𝐼, if(𝑖𝐼, (𝑖 − 1), 𝑖)))
4442, 43syl6eqr 2703 . . . . . . 7 (𝑚 = 𝐼 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) = 𝑃)
4544eleq1d 2715 . . . . . 6 (𝑚 = 𝐼 → ((𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵𝑃𝐵))
4637, 45imbi12d 333 . . . . 5 (𝑚 = 𝐼 → ((𝑚𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑚, if(𝑖𝑚, (𝑖 − 1), 𝑖))) ∈ 𝐵) ↔ (𝐼𝑁𝑃𝐵)))
47 fzfi 12811 . . . . . . . . 9 (1...𝑁) ∈ Fin
483, 47eqeltri 2726 . . . . . . . 8 𝐷 ∈ Fin
49 psgnfzto1st.g . . . . . . . . 9 𝐺 = (SymGrp‘𝐷)
5049idresperm 17875 . . . . . . . 8 (𝐷 ∈ Fin → ( I ↾ 𝐷) ∈ (Base‘𝐺))
5148, 50ax-mp 5 . . . . . . 7 ( I ↾ 𝐷) ∈ (Base‘𝐺)
52 psgnfzto1st.b . . . . . . 7 𝐵 = (Base‘𝐺)
5351, 52eleqtrri 2729 . . . . . 6 ( I ↾ 𝐷) ∈ 𝐵
54532a1i 12 . . . . 5 (𝑁 ∈ ℕ → (1 ≤ 𝑁 → ( I ↾ 𝐷) ∈ 𝐵))
55 simplr 807 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑛 ∈ ℕ)
5655peano2nnd 11075 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛 + 1) ∈ ℕ)
57 simpll 805 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑁 ∈ ℕ)
58 simpr 476 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛 + 1) ≤ 𝑁)
5956, 57, 583jca 1261 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → ((𝑛 + 1) ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ (𝑛 + 1) ≤ 𝑁))
60 elfz1b 12447 . . . . . . . . . . 11 ((𝑛 + 1) ∈ (1...𝑁) ↔ ((𝑛 + 1) ∈ ℕ ∧ 𝑁 ∈ ℕ ∧ (𝑛 + 1) ≤ 𝑁))
6159, 60sylibr 224 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛 + 1) ∈ (1...𝑁))
6261, 3syl6eleqr 2741 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛 + 1) ∈ 𝐷)
633psgnfzto1stlem 29978 . . . . . . . . 9 ((𝑛 ∈ ℕ ∧ (𝑛 + 1) ∈ 𝐷) → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) = (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))))
6455, 62, 63syl2anc 694 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) = (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))))
6564adantlr 751 . . . . . . 7 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) = (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))))
66 eqid 2651 . . . . . . . . . 10 ran (pmTrsp‘𝐷) = ran (pmTrsp‘𝐷)
6766, 49, 52symgtrf 17935 . . . . . . . . 9 ran (pmTrsp‘𝐷) ⊆ 𝐵
68 eqid 2651 . . . . . . . . . . . 12 (pmTrsp‘𝐷) = (pmTrsp‘𝐷)
693, 68pmtrto1cl 29977 . . . . . . . . . . 11 ((𝑛 ∈ ℕ ∧ (𝑛 + 1) ∈ 𝐷) → ((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ ran (pmTrsp‘𝐷))
7055, 62, 69syl2anc 694 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → ((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ ran (pmTrsp‘𝐷))
7170adantlr 751 . . . . . . . . 9 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → ((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ ran (pmTrsp‘𝐷))
7267, 71sseldi 3634 . . . . . . . 8 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → ((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ 𝐵)
7355nnred 11073 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑛 ∈ ℝ)
74 1red 10093 . . . . . . . . . . . 12 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 1 ∈ ℝ)
7573, 74readdcld 10107 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛 + 1) ∈ ℝ)
7657nnred 11073 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑁 ∈ ℝ)
7773lep1d 10993 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑛 ≤ (𝑛 + 1))
7873, 75, 76, 77, 58letrd 10232 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑛𝑁)
7978adantlr 751 . . . . . . . . 9 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → 𝑛𝑁)
80 simplr 807 . . . . . . . . 9 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵))
8179, 80mpd 15 . . . . . . . 8 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)
82 eqid 2651 . . . . . . . . . 10 (+g𝐺) = (+g𝐺)
8349, 52, 82symgov 17856 . . . . . . . . 9 ((((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ 𝐵 ∧ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵) → (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)})(+g𝐺)(𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))) = (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))))
8449, 52, 82symgcl 17857 . . . . . . . . 9 ((((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ 𝐵 ∧ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵) → (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)})(+g𝐺)(𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))) ∈ 𝐵)
8583, 84eqeltrrd 2731 . . . . . . . 8 ((((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∈ 𝐵 ∧ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵) → (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))) ∈ 𝐵)
8672, 81, 85syl2anc 694 . . . . . . 7 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → (((pmTrsp‘𝐷)‘{𝑛, (𝑛 + 1)}) ∘ (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖)))) ∈ 𝐵)
8765, 86eqeltrd 2730 . . . . . 6 ((((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) ∧ (𝑛 + 1) ≤ 𝑁) → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) ∈ 𝐵)
8887ex 449 . . . . 5 (((𝑁 ∈ ℕ ∧ 𝑛 ∈ ℕ) ∧ (𝑛𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, 𝑛, if(𝑖𝑛, (𝑖 − 1), 𝑖))) ∈ 𝐵)) → ((𝑛 + 1) ≤ 𝑁 → (𝑖𝐷 ↦ if(𝑖 = 1, (𝑛 + 1), if(𝑖 ≤ (𝑛 + 1), (𝑖 − 1), 𝑖))) ∈ 𝐵))
8920, 28, 36, 46, 54, 88nnindd 29694 . . . 4 ((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ) → (𝐼𝑁𝑃𝐵))
9089imp 444 . . 3 (((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ) ∧ 𝐼𝑁) → 𝑃𝐵)
917, 90sylbi 207 . 2 ((𝑁 ∈ ℕ ∧ 𝐼 ∈ ℕ ∧ 𝐼𝑁) → 𝑃𝐵)
926, 91syl 17 1 (𝐼𝐷𝑃𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383  w3a 1054   = wceq 1523  wcel 2030  ifcif 4119  {cpr 4212   class class class wbr 4685  cmpt 4762   I cid 5052  ran crn 5144  cres 5145  ccom 5147  cfv 5926  (class class class)co 6690  Fincfn 7997  1c1 9975   + caddc 9977  cle 10113  cmin 10304  cn 11058  ...cfz 12364  Basecbs 15904  +gcplusg 15988  SymGrpcsymg 17843  pmTrspcpmtr 17907
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-int 4508  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-om 7108  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-rdg 7551  df-1o 7605  df-2o 7606  df-oadd 7609  df-er 7787  df-map 7901  df-en 7998  df-dom 7999  df-sdom 8000  df-fin 8001  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-nn 11059  df-2 11117  df-3 11118  df-4 11119  df-5 11120  df-6 11121  df-7 11122  df-8 11123  df-9 11124  df-n0 11331  df-z 11416  df-uz 11726  df-fz 12365  df-struct 15906  df-ndx 15907  df-slot 15908  df-base 15910  df-plusg 16001  df-tset 16007  df-symg 17844  df-pmtr 17908
This theorem is referenced by:  fzto1stinvn  29982  psgnfzto1st  29983  madjusmdetlem2  30022  madjusmdetlem3  30023  madjusmdetlem4  30024
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