Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > expdiv | Structured version Visualization version GIF version |
Description: Nonnegative integer exponentiation of a quotient. (Contributed by NM, 2-Aug-2006.) (Revised by Mario Carneiro, 4-Jun-2014.) |
Ref | Expression |
---|---|
expdiv | ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | divrec 11649 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) | |
2 | 1 | 3expb 1119 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) |
3 | 2 | 3adant3 1131 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → (𝐴 / 𝐵) = (𝐴 · (1 / 𝐵))) |
4 | 3 | oveq1d 7286 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴 · (1 / 𝐵))↑𝑁)) |
5 | reccl 11640 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) → (1 / 𝐵) ∈ ℂ) | |
6 | mulexp 13820 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (1 / 𝐵) ∈ ℂ ∧ 𝑁 ∈ ℕ0) → ((𝐴 · (1 / 𝐵))↑𝑁) = ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁))) | |
7 | 5, 6 | syl3an2 1163 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 · (1 / 𝐵))↑𝑁) = ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁))) |
8 | simp2l 1198 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → 𝐵 ∈ ℂ) | |
9 | simp2r 1199 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → 𝐵 ≠ 0) | |
10 | nn0z 12343 | . . . . . 6 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℤ) | |
11 | 10 | 3ad2ant3 1134 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → 𝑁 ∈ ℤ) |
12 | exprec 13822 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 ≠ 0 ∧ 𝑁 ∈ ℤ) → ((1 / 𝐵)↑𝑁) = (1 / (𝐵↑𝑁))) | |
13 | 8, 9, 11, 12 | syl3anc 1370 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((1 / 𝐵)↑𝑁) = (1 / (𝐵↑𝑁))) |
14 | 13 | oveq2d 7287 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁)) = ((𝐴↑𝑁) · (1 / (𝐵↑𝑁)))) |
15 | expcl 13798 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐴↑𝑁) ∈ ℂ) | |
16 | 15 | 3adant2 1130 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → (𝐴↑𝑁) ∈ ℂ) |
17 | expcl 13798 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) | |
18 | 17 | adantlr 712 | . . . . 5 ⊢ (((𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) |
19 | 18 | 3adant1 1129 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ∈ ℂ) |
20 | expne0i 13813 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 ≠ 0 ∧ 𝑁 ∈ ℤ) → (𝐵↑𝑁) ≠ 0) | |
21 | 8, 9, 11, 20 | syl3anc 1370 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → (𝐵↑𝑁) ≠ 0) |
22 | 16, 19, 21 | divrecd 11754 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) / (𝐵↑𝑁)) = ((𝐴↑𝑁) · (1 / (𝐵↑𝑁)))) |
23 | 14, 22 | eqtr4d 2783 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴↑𝑁) · ((1 / 𝐵)↑𝑁)) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
24 | 4, 7, 23 | 3eqtrd 2784 | 1 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0) ∧ 𝑁 ∈ ℕ0) → ((𝐴 / 𝐵)↑𝑁) = ((𝐴↑𝑁) / (𝐵↑𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1542 ∈ wcel 2110 ≠ wne 2945 (class class class)co 7271 ℂcc 10870 0cc0 10872 1c1 10873 · cmul 10877 / cdiv 11632 ℕ0cn0 12233 ℤcz 12319 ↑cexp 13780 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-n0 12234 df-z 12320 df-uz 12582 df-seq 13720 df-exp 13781 |
This theorem is referenced by: expdivd 13876 stoweidlem7 43519 onetansqsecsq 46432 cotsqcscsq 46433 |
Copyright terms: Public domain | W3C validator |