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Theorem stoweidlem19 46753
Description: If a set of real functions is closed under multiplication and it contains constants, then it is closed under finite exponentiation. (Contributed by Glauco Siliprandi, 20-Apr-2017.)
Hypotheses
Ref Expression
stoweidlem19.1 𝑡𝐹
stoweidlem19.2 𝑡𝜑
stoweidlem19.3 ((𝜑𝑓𝐴) → 𝑓:𝑇⟶ℝ)
stoweidlem19.4 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) · (𝑔𝑡))) ∈ 𝐴)
stoweidlem19.5 ((𝜑𝑥 ∈ ℝ) → (𝑡𝑇𝑥) ∈ 𝐴)
stoweidlem19.6 (𝜑𝐹𝐴)
stoweidlem19.7 (𝜑𝑁 ∈ ℕ0)
Assertion
Ref Expression
stoweidlem19 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)) ∈ 𝐴)
Distinct variable groups:   𝑓,𝑔,𝑡,𝐴   𝑓,𝐹,𝑔   𝑇,𝑓,𝑔,𝑡   𝜑,𝑓,𝑔   𝑡,𝑁   𝑥,𝑡,𝐴   𝑥,𝑇   𝜑,𝑥
Allowed substitution hints:   𝜑(𝑡)   𝐹(𝑥,𝑡)   𝑁(𝑥,𝑓,𝑔)

Proof of Theorem stoweidlem19
Dummy variables 𝑚 𝑛 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 stoweidlem19.7 . 2 (𝜑𝑁 ∈ ℕ0)
2 oveq2 7418 . . . . . 6 (𝑛 = 0 → ((𝐹𝑡)↑𝑛) = ((𝐹𝑡)↑0))
32mpteq2dv 5205 . . . . 5 (𝑛 = 0 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) = (𝑡𝑇 ↦ ((𝐹𝑡)↑0)))
43eleq1d 2848 . . . 4 (𝑛 = 0 → ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴 ↔ (𝑡𝑇 ↦ ((𝐹𝑡)↑0)) ∈ 𝐴))
54imbi2d 343 . . 3 (𝑛 = 0 → ((𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴) ↔ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑0)) ∈ 𝐴)))
6 oveq2 7418 . . . . . 6 (𝑛 = 𝑚 → ((𝐹𝑡)↑𝑛) = ((𝐹𝑡)↑𝑚))
76mpteq2dv 5205 . . . . 5 (𝑛 = 𝑚 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) = (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)))
87eleq1d 2848 . . . 4 (𝑛 = 𝑚 → ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴 ↔ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴))
98imbi2d 343 . . 3 (𝑛 = 𝑚 → ((𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴) ↔ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)))
10 oveq2 7418 . . . . . 6 (𝑛 = (𝑚 + 1) → ((𝐹𝑡)↑𝑛) = ((𝐹𝑡)↑(𝑚 + 1)))
1110mpteq2dv 5205 . . . . 5 (𝑛 = (𝑚 + 1) → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) = (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))))
1211eleq1d 2848 . . . 4 (𝑛 = (𝑚 + 1) → ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴 ↔ (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) ∈ 𝐴))
1312imbi2d 343 . . 3 (𝑛 = (𝑚 + 1) → ((𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴) ↔ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) ∈ 𝐴)))
14 oveq2 7418 . . . . . 6 (𝑛 = 𝑁 → ((𝐹𝑡)↑𝑛) = ((𝐹𝑡)↑𝑁))
1514mpteq2dv 5205 . . . . 5 (𝑛 = 𝑁 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) = (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)))
1615eleq1d 2848 . . . 4 (𝑛 = 𝑁 → ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴 ↔ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)) ∈ 𝐴))
1716imbi2d 343 . . 3 (𝑛 = 𝑁 → ((𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑛)) ∈ 𝐴) ↔ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)) ∈ 𝐴)))
18 stoweidlem19.2 . . . . 5 𝑡𝜑
19 stoweidlem19.6 . . . . . . . . 9 (𝜑𝐹𝐴)
2019ancli 557 . . . . . . . . 9 (𝜑 → (𝜑𝐹𝐴))
21 eleq1 2851 . . . . . . . . . . . 12 (𝑓 = 𝐹 → (𝑓𝐴𝐹𝐴))
2221anbi2d 641 . . . . . . . . . . 11 (𝑓 = 𝐹 → ((𝜑𝑓𝐴) ↔ (𝜑𝐹𝐴)))
23 feq1 6683 . . . . . . . . . . 11 (𝑓 = 𝐹 → (𝑓:𝑇⟶ℝ ↔ 𝐹:𝑇⟶ℝ))
2422, 23imbi12d 347 . . . . . . . . . 10 (𝑓 = 𝐹 → (((𝜑𝑓𝐴) → 𝑓:𝑇⟶ℝ) ↔ ((𝜑𝐹𝐴) → 𝐹:𝑇⟶ℝ)))
25 stoweidlem19.3 . . . . . . . . . 10 ((𝜑𝑓𝐴) → 𝑓:𝑇⟶ℝ)
2624, 25vtoclg 3522 . . . . . . . . 9 (𝐹𝐴 → ((𝜑𝐹𝐴) → 𝐹:𝑇⟶ℝ))
2719, 20, 26sylc 66 . . . . . . . 8 (𝜑𝐹:𝑇⟶ℝ)
2827ffvelcdmda 7079 . . . . . . 7 ((𝜑𝑡𝑇) → (𝐹𝑡) ∈ ℝ)
29 recn 11185 . . . . . . 7 ((𝐹𝑡) ∈ ℝ → (𝐹𝑡) ∈ ℂ)
30 exp0 14097 . . . . . . 7 ((𝐹𝑡) ∈ ℂ → ((𝐹𝑡)↑0) = 1)
3128, 29, 303syl 19 . . . . . 6 ((𝜑𝑡𝑇) → ((𝐹𝑡)↑0) = 1)
3231eqcomd 2769 . . . . 5 ((𝜑𝑡𝑇) → 1 = ((𝐹𝑡)↑0))
3318, 32mpteq2da 5203 . . . 4 (𝜑 → (𝑡𝑇 ↦ 1) = (𝑡𝑇 ↦ ((𝐹𝑡)↑0)))
34 1re 11203 . . . . 5 1 ∈ ℝ
35 stoweidlem19.5 . . . . . 6 ((𝜑𝑥 ∈ ℝ) → (𝑡𝑇𝑥) ∈ 𝐴)
3635stoweidlem4 46738 . . . . 5 ((𝜑 ∧ 1 ∈ ℝ) → (𝑡𝑇 ↦ 1) ∈ 𝐴)
3734, 36mpan2 703 . . . 4 (𝜑 → (𝑡𝑇 ↦ 1) ∈ 𝐴)
3833, 37eqeltrrd 2864 . . 3 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑0)) ∈ 𝐴)
39 simpr 489 . . . . 5 (((𝑚 ∈ ℕ0 ∧ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)) ∧ 𝜑) → 𝜑)
40 simpll 778 . . . . 5 (((𝑚 ∈ ℕ0 ∧ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)) ∧ 𝜑) → 𝑚 ∈ ℕ0)
41 simplr 780 . . . . . 6 (((𝑚 ∈ ℕ0 ∧ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)) ∧ 𝜑) → (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴))
4239, 41mpd 16 . . . . 5 (((𝑚 ∈ ℕ0 ∧ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)) ∧ 𝜑) → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)
43 nfv 1944 . . . . . . . 8 𝑡 𝑚 ∈ ℕ0
44 nfmpt1 5210 . . . . . . . . 9 𝑡(𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))
4544nfel1 2941 . . . . . . . 8 𝑡(𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴
4618, 43, 45nf3an 1931 . . . . . . 7 𝑡(𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)
47 simpl1 1210 . . . . . . . . 9 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → 𝜑)
48 simpr 489 . . . . . . . . 9 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → 𝑡𝑇)
4928recnd 11232 . . . . . . . . 9 ((𝜑𝑡𝑇) → (𝐹𝑡) ∈ ℂ)
5047, 48, 49syl2anc 595 . . . . . . . 8 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → (𝐹𝑡) ∈ ℂ)
51 simpl2 1211 . . . . . . . 8 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → 𝑚 ∈ ℕ0)
5250, 51expp1d 14179 . . . . . . 7 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → ((𝐹𝑡)↑(𝑚 + 1)) = (((𝐹𝑡)↑𝑚) · (𝐹𝑡)))
5346, 52mpteq2da 5203 . . . . . 6 ((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) = (𝑡𝑇 ↦ (((𝐹𝑡)↑𝑚) · (𝐹𝑡))))
54283adant2 1149 . . . . . . . . . . . 12 ((𝜑𝑚 ∈ ℕ0𝑡𝑇) → (𝐹𝑡) ∈ ℝ)
55 simp2 1155 . . . . . . . . . . . 12 ((𝜑𝑚 ∈ ℕ0𝑡𝑇) → 𝑚 ∈ ℕ0)
5654, 55reexpcld 14195 . . . . . . . . . . 11 ((𝜑𝑚 ∈ ℕ0𝑡𝑇) → ((𝐹𝑡)↑𝑚) ∈ ℝ)
5747, 51, 48, 56syl3anc 1398 . . . . . . . . . 10 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → ((𝐹𝑡)↑𝑚) ∈ ℝ)
58 eqid 2763 . . . . . . . . . . . 12 (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) = (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))
5958fvmpt2 7001 . . . . . . . . . . 11 ((𝑡𝑇 ∧ ((𝐹𝑡)↑𝑚) ∈ ℝ) → ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) = ((𝐹𝑡)↑𝑚))
6059eqcomd 2769 . . . . . . . . . 10 ((𝑡𝑇 ∧ ((𝐹𝑡)↑𝑚) ∈ ℝ) → ((𝐹𝑡)↑𝑚) = ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡))
6148, 57, 60syl2anc 595 . . . . . . . . 9 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → ((𝐹𝑡)↑𝑚) = ((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡))
6261oveq1d 7425 . . . . . . . 8 (((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) ∧ 𝑡𝑇) → (((𝐹𝑡)↑𝑚) · (𝐹𝑡)) = (((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) · (𝐹𝑡)))
6346, 62mpteq2da 5203 . . . . . . 7 ((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ (((𝐹𝑡)↑𝑚) · (𝐹𝑡))) = (𝑡𝑇 ↦ (((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) · (𝐹𝑡))))
6419adantr 485 . . . . . . . . 9 ((𝜑 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → 𝐹𝐴)
6544nfeq2 2942 . . . . . . . . . 10 𝑡 𝑓 = (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))
66 stoweidlem19.1 . . . . . . . . . . 11 𝑡𝐹
6766nfeq2 2942 . . . . . . . . . 10 𝑡 𝑔 = 𝐹
68 stoweidlem19.4 . . . . . . . . . 10 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) · (𝑔𝑡))) ∈ 𝐴)
6965, 67, 68stoweidlem6 46740 . . . . . . . . 9 ((𝜑 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴𝐹𝐴) → (𝑡𝑇 ↦ (((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) · (𝐹𝑡))) ∈ 𝐴)
7064, 69mpd3an3 1491 . . . . . . . 8 ((𝜑 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ (((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) · (𝐹𝑡))) ∈ 𝐴)
71703adant2 1149 . . . . . . 7 ((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ (((𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚))‘𝑡) · (𝐹𝑡))) ∈ 𝐴)
7263, 71eqeltrd 2863 . . . . . 6 ((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ (((𝐹𝑡)↑𝑚) · (𝐹𝑡))) ∈ 𝐴)
7353, 72eqeltrd 2863 . . . . 5 ((𝜑𝑚 ∈ ℕ0 ∧ (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) ∈ 𝐴)
7439, 40, 42, 73syl3anc 1398 . . . 4 (((𝑚 ∈ ℕ0 ∧ (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴)) ∧ 𝜑) → (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) ∈ 𝐴)
7574exp31 424 . . 3 (𝑚 ∈ ℕ0 → ((𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑚)) ∈ 𝐴) → (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑(𝑚 + 1))) ∈ 𝐴)))
765, 9, 13, 17, 38, 75nn0ind 12686 . 2 (𝑁 ∈ ℕ0 → (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)) ∈ 𝐴))
771, 76mpcom 39 1 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡)↑𝑁)) ∈ 𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 400  w3a 1103   = wceq 1570  wnf 1813  wcel 2143  wnfc 2910  cmpt 5192  wf 6532  cfv 6536  (class class class)co 7410  cc 11093  cr 11094  0cc0 11095  1c1 11096   + caddc 11098   · cmul 11100  0cn0 12499  cexp 14093
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732  ax-cnex 11151  ax-resscn 11152  ax-1cn 11153  ax-icn 11154  ax-addcl 11155  ax-addrcl 11156  ax-mulcl 11157  ax-mulrcl 11158  ax-mulcom 11159  ax-addass 11160  ax-mulass 11161  ax-distr 11162  ax-i2m1 11163  ax-1ne0 11164  ax-1rid 11165  ax-rnegex 11166  ax-rrecex 11167  ax-cnre 11168  ax-pre-lttri 11169  ax-pre-lttrn 11170  ax-pre-ltadd 11171  ax-pre-mulgt0 11172
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-nel 3065  df-ral 3080  df-rex 3090  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-iun 4958  df-br 5110  df-opab 5174  df-mpt 5193  df-tr 5219  df-id 5556  df-eprel 5561  df-po 5569  df-so 5570  df-fr 5614  df-we 5616  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-pred 6302  df-ord 6363  df-on 6364  df-lim 6365  df-suc 6366  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-riota 7367  df-ov 7413  df-oprab 7414  df-mpo 7415  df-om 7859  df-2nd 7983  df-frecs 8274  df-wrecs 8305  df-recs 8354  df-rdg 8393  df-er 8690  df-en 8940  df-dom 8941  df-sdom 8942  df-pnf 11240  df-mnf 11241  df-xr 11242  df-ltxr 11243  df-le 11244  df-sub 11438  df-neg 11439  df-nn 12229  df-n0 12500  df-z 12587  df-uz 12858  df-seq 14034  df-exp 14094
This theorem is referenced by:  stoweidlem40  46774
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