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Mirrors > Home > ILE Home > Th. List > expdivap | GIF version |
Description: Nonnegative integer exponentiation of a quotient. (Contributed by Jim Kingdon, 11-Jun-2020.) |
Ref | Expression |
---|---|
expdivap | ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | divrecap 8605 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) | |
2 | 1 | 3expb 1199 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) |
3 | 2 | 3adant3 1012 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) |
4 | 3 | oveq1d 5868 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴 · (1 / 𝐵))↑𝑁)) |
5 | recclap 8596 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0) → (1 / 𝐵) ∈ ℂ) | |
6 | mulexp 10515 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (1 / 𝐵) ∈ ℂ ∧ 𝑁 ∈ ℕ0) → ((𝐴 · (1 / 𝐵))↑𝑁) = ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁))) | |
7 | 5, 6 | syl3an2 1267 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 · (1 / 𝐵))↑𝑁) = ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁))) |
8 | simp2l 1018 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → 𝐵 ∈ ℂ) | |
9 | simp2r 1019 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → 𝐵 # 0) | |
10 | nn0z 9232 | . . . . . 6 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
11 | 10 | 3ad2ant3 1015 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → 𝑁 ∈ ℤ) |
12 | exprecap 10517 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0 ∧ 𝑁 ∈ ℤ) → ((1 / 𝐵)↑𝑁) = (1 / (𝐵↑𝑁))) | |
13 | 8, 9, 11, 12 | syl3anc 1233 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((1 / 𝐵)↑𝑁) = (1 / (𝐵↑𝑁))) |
14 | 13 | oveq2d 5869 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁)) = ((𝐴↑𝑁) · (1 / (𝐵↑𝑁)))) |
15 | expcl 10494 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐴↑𝑁) ∈ ℂ) | |
16 | 15 | 3adant2 1011 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → (𝐴↑𝑁) ∈ ℂ) |
17 | expcl 10494 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) | |
18 | 17 | adantlr 474 | . . . . 5 ⊢ (((𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) |
19 | 18 | 3adant1 1010 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) |
20 | expap0i 10508 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0 ∧ 𝑁 ∈ ℤ) → (𝐵↑𝑁) # 0) | |
21 | 8, 9, 11, 20 | syl3anc 1233 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) # 0) |
22 | 16, 19, 21 | divrecapd 8710 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) / (𝐵↑𝑁)) = ((𝐴↑𝑁) · (1 / (𝐵↑𝑁)))) |
23 | 14, 22 | eqtr4d 2206 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁)) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
24 | 4, 7, 23 | 3eqtrd 2207 | 1 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∧ w3a 973 = wceq 1348 ∈ wcel 2141 class class class wbr 3989 (class class class)co 5853 ℂcc 7772 0cc0 7774 1c1 7775 · cmul 7779 # cap 8500 / cdiv 8589 ℕ0cn0 9135 ℤcz 9212 ↑cexp 10475 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-mulrcl 7873 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-precex 7884 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 ax-pre-mulgt0 7891 ax-pre-mulext 7892 |
This theorem depends on definitions: df-bi 116 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-if 3527 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-po 4281 df-iso 4282 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-frec 6370 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-reap 8494 df-ap 8501 df-div 8590 df-inn 8879 df-n0 9136 df-z 9213 df-uz 9488 df-seqfrec 10402 df-exp 10476 |
This theorem is referenced by: expdivapd 10623 |
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