mulexpzap - Intuitionistic Logic Explorer

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Theorem mulexpzap 10559

Description: Integer exponentiation of a product. (Contributed by Jim Kingdon, 10-Jun-2020.)

**Assertion**
Ref	Expression
mulexpzap	⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℤ) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))

**Proof of Theorem mulexpzap**
Step	Hyp	Ref	Expression
1		elznn0nn 9266	. . 3 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℕ₀ ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)))
2		simpl 109	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 # 0) → 𝐴 ∈ ℂ)
3		simpl 109	. . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0) → 𝐵 ∈ ℂ)
4	2, 3	anim12i 338	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) → (𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ))
5		mulexp 10558	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
6	5	3expa 1203	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ 𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
7	4, 6	sylan 283	. . . 4 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ 𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
8		simplll 533	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐴 ∈ ℂ)
9		simplrl 535	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐵 ∈ ℂ)
10	8, 9	mulcld 7977	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴 · 𝐵) ∈ ℂ)
11		simpllr 534	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐴 # 0)
12		simplrr 536	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐵 # 0)
13	8, 9, 11, 12	mulap0d 8614	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴 · 𝐵) # 0)
14		recn 7943	. . . . . . 7 ⊢ (𝑁 ∈ ℝ → 𝑁 ∈ ℂ)
15	14	ad2antrl 490	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝑁 ∈ ℂ)
16		nnnn0 9182	. . . . . . 7 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℕ₀)
17	16	ad2antll 491	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → -𝑁 ∈ ℕ₀)
18		expineg2 10528	. . . . . 6 ⊢ ((((𝐴 · 𝐵) ∈ ℂ ∧ (𝐴 · 𝐵) # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → ((𝐴 · 𝐵)↑𝑁) = (1 / ((𝐴 · 𝐵)↑-𝑁)))
19	10, 13, 15, 17, 18	syl22anc 1239	. . . . 5 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = (1 / ((𝐴 · 𝐵)↑-𝑁)))
20		expineg2 10528	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
21	8, 11, 15, 17, 20	syl22anc 1239	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
22		expineg2 10528	. . . . . . . 8 ⊢ (((𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
23	9, 12, 15, 17, 22	syl22anc 1239	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
24	21, 23	oveq12d 5892	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴↑𝑁) · (𝐵↑𝑁)) = ((1 / (𝐴↑-𝑁)) · (1 / (𝐵↑-𝑁))))
25		mulexp 10558	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
26	8, 9, 17, 25	syl3anc 1238	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
27	26	oveq2d 5890	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (1 / ((𝐴 · 𝐵)↑-𝑁)) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
28		1t1e1 9070	. . . . . . . . 9 ⊢ (1 · 1) = 1
29	28	oveq1i 5884	. . . . . . . 8 ⊢ ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
30	27, 29	eqtr4di 2228	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (1 / ((𝐴 · 𝐵)↑-𝑁)) = ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
31		expcl 10537	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → (𝐴↑-𝑁) ∈ ℂ)
32	8, 17, 31	syl2anc 411	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑-𝑁) ∈ ℂ)
33		nnz 9271	. . . . . . . . . 10 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℤ)
34	33	ad2antll 491	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → -𝑁 ∈ ℤ)
35		expap0i 10551	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 # 0 ∧ -𝑁 ∈ ℤ) → (𝐴↑-𝑁) # 0)
36	8, 11, 34, 35	syl3anc 1238	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑-𝑁) # 0)
37		expcl 10537	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → (𝐵↑-𝑁) ∈ ℂ)
38	9, 17, 37	syl2anc 411	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑-𝑁) ∈ ℂ)
39		expap0i 10551	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0 ∧ -𝑁 ∈ ℤ) → (𝐵↑-𝑁) # 0)
40	9, 12, 34, 39	syl3anc 1238	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑-𝑁) # 0)
41		ax-1cn 7903	. . . . . . . . 9 ⊢ 1 ∈ ℂ
42		divmuldivap 8668	. . . . . . . . 9 ⊢ (((1 ∈ ℂ ∧ 1 ∈ ℂ) ∧ (((𝐴↑-𝑁) ∈ ℂ ∧ (𝐴↑-𝑁) # 0) ∧ ((𝐵↑-𝑁) ∈ ℂ ∧ (𝐵↑-𝑁) # 0))) → ((1 / (𝐴↑-𝑁)) · (1 / (𝐵↑-𝑁))) = ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
43	41, 41, 42	mpanl12 436	. . . . . . . 8 ⊢ ((((𝐴↑-𝑁) ∈ ℂ ∧ (𝐴↑-𝑁) # 0) ∧ ((𝐵↑-𝑁) ∈ ℂ ∧ (𝐵↑-𝑁) # 0)) → ((1 / (𝐴↑-𝑁)) · (1 / (𝐵↑-𝑁))) = ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
44	32, 36, 38, 40, 43	syl22anc 1239	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((1 / (𝐴↑-𝑁)) · (1 / (𝐵↑-𝑁))) = ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
45	30, 44	eqtr4d 2213	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (1 / ((𝐴 · 𝐵)↑-𝑁)) = ((1 / (𝐴↑-𝑁)) · (1 / (𝐵↑-𝑁))))
46	24, 45	eqtr4d 2213	. . . . 5 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴↑𝑁) · (𝐵↑𝑁)) = (1 / ((𝐴 · 𝐵)↑-𝑁)))
47	19, 46	eqtr4d 2213	. . . 4 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
48	7, 47	jaodan 797	. . 3 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℕ₀ ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
49	1, 48	sylan2b 287	. 2 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ 𝑁 ∈ ℤ) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
50	49	3impa 1194	1 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℤ) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ∨ wo 708 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 class class class wbr 4003 (class class class)co 5874 ℂcc 7808 ℝcr 7809 0cc0 7810 1c1 7811 · cmul 7815 -cneg 8128 # cap 8537 / cdiv 8628 ℕcn 8918 ℕ₀cn0 9175 ℤcz 9252 ↑cexp 10518

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4118 ax-sep 4121 ax-nul 4129 ax-pow 4174 ax-pr 4209 ax-un 4433 ax-setind 4536 ax-iinf 4587 ax-cnex 7901 ax-resscn 7902 ax-1cn 7903 ax-1re 7904 ax-icn 7905 ax-addcl 7906 ax-addrcl 7907 ax-mulcl 7908 ax-mulrcl 7909 ax-addcom 7910 ax-mulcom 7911 ax-addass 7912 ax-mulass 7913 ax-distr 7914 ax-i2m1 7915 ax-0lt1 7916 ax-1rid 7917 ax-0id 7918 ax-rnegex 7919 ax-precex 7920 ax-cnre 7921 ax-pre-ltirr 7922 ax-pre-ltwlin 7923 ax-pre-lttrn 7924 ax-pre-apti 7925 ax-pre-ltadd 7926 ax-pre-mulgt0 7927 ax-pre-mulext 7928

This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2739 df-sbc 2963 df-csb 3058 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-nul 3423 df-if 3535 df-pw 3577 df-sn 3598 df-pr 3599 df-op 3601 df-uni 3810 df-int 3845 df-iun 3888 df-br 4004 df-opab 4065 df-mpt 4066 df-tr 4102 df-id 4293 df-po 4296 df-iso 4297 df-iord 4366 df-on 4368 df-ilim 4369 df-suc 4371 df-iom 4590 df-xp 4632 df-rel 4633 df-cnv 4634 df-co 4635 df-dm 4636 df-rn 4637 df-res 4638 df-ima 4639 df-iota 5178 df-fun 5218 df-fn 5219 df-f 5220 df-f1 5221 df-fo 5222 df-f1o 5223 df-fv 5224 df-riota 5830 df-ov 5877 df-oprab 5878 df-mpo 5879 df-1st 6140 df-2nd 6141 df-recs 6305 df-frec 6391 df-pnf 7993 df-mnf 7994 df-xr 7995 df-ltxr 7996 df-le 7997 df-sub 8129 df-neg 8130 df-reap 8531 df-ap 8538 df-div 8629 df-inn 8919 df-n0 9176 df-z 9253 df-uz 9528 df-seqfrec 10445 df-exp 10519

This theorem is referenced by: exprecap 10560

W3C validator