mulexpzap - Intuitionistic Logic Explorer

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Theorem mulexpzap 11018

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 9660	. . 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 11017	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
6	5	3expa 1234	. . . . 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 539	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐴 ∈ ℂ)
9		simplrl 541	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐵 ∈ ℂ)
10	8, 9	mulcld 8346	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴 · 𝐵) ∈ ℂ)
11		simpllr 540	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐴 # 0)
12		simplrr 542	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝐵 # 0)
13	8, 9, 11, 12	mulap0d 8987	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴 · 𝐵) # 0)
14		recn 8312	. . . . . . 7 ⊢ (𝑁 ∈ ℝ → 𝑁 ∈ ℂ)
15	14	ad2antrl 494	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → 𝑁 ∈ ℂ)
16		nnnn0 9572	. . . . . . 7 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℕ₀)
17	16	ad2antll 495	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → -𝑁 ∈ ℕ₀)
18		expineg2 10987	. . . . . 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 1279	. . . . 5 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = (1 / ((𝐴 · 𝐵)↑-𝑁)))
20		expineg2 10987	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
21	8, 11, 15, 17, 20	syl22anc 1279	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
22		expineg2 10987	. . . . . . . 8 ⊢ (((𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
23	9, 12, 15, 17, 22	syl22anc 1279	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
24	21, 23	oveq12d 6103	. . . . . 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 11017	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
26	8, 9, 17, 25	syl3anc 1278	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
27	26	oveq2d 6101	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (1 / ((𝐴 · 𝐵)↑-𝑁)) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
28		1t1e1 9458	. . . . . . . . 9 ⊢ (1 · 1) = 1
29	28	oveq1i 6095	. . . . . . . 8 ⊢ ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
30	27, 29	eqtr4di 2289	. . . . . . 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 10996	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → (𝐴↑-𝑁) ∈ ℂ)
32	8, 17, 31	syl2anc 415	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑-𝑁) ∈ ℂ)
33		nnz 9665	. . . . . . . . . 10 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℤ)
34	33	ad2antll 495	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → -𝑁 ∈ ℤ)
35		expap0i 11010	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 # 0 ∧ -𝑁 ∈ ℤ) → (𝐴↑-𝑁) # 0)
36	8, 11, 34, 35	syl3anc 1278	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑-𝑁) # 0)
37		expcl 10996	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → (𝐵↑-𝑁) ∈ ℂ)
38	9, 17, 37	syl2anc 415	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑-𝑁) ∈ ℂ)
39		expap0i 11010	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0 ∧ -𝑁 ∈ ℤ) → (𝐵↑-𝑁) # 0)
40	9, 12, 34, 39	syl3anc 1278	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑-𝑁) # 0)
41		ax-1cn 8272	. . . . . . . . 9 ⊢ 1 ∈ ℂ
42		divmuldivap 9043	. . . . . . . . 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 440	. . . . . . . 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 1279	. . . . . . 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 2274	. . . . . 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 2274	. . . . 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 2274	. . . 4 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
48	7, 47	jaodan 809	. . 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 1225	1 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ 𝑁 ∈ ℤ) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))

Colors of variables: wff set class

This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∨ wo 720 ∧ w3a 1009 = wceq 1402 ∈ wcel 2209 class class class wbr 4130 (class class class)co 6085 ℂcc 8177 ℝcr 8178 0cc0 8179 1c1 8180 · cmul 8184 -cneg 8498 # cap 8910 / cdiv 9003 ℕcn 9305 ℕ₀cn0 9565 ℤcz 9646 ↑cexp 10977

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-iinf 4735 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-mulrcl 8278 ax-addcom 8279 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-i2m1 8284 ax-0lt1 8285 ax-1rid 8286 ax-0id 8287 ax-rnegex 8288 ax-precex 8289 ax-cnre 8290 ax-pre-ltirr 8291 ax-pre-ltwlin 8292 ax-pre-lttrn 8293 ax-pre-apti 8294 ax-pre-ltadd 8295 ax-pre-mulgt0 8296 ax-pre-mulext 8297

This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-tr 4230 df-id 4438 df-po 4441 df-iso 4442 df-iord 4511 df-on 4513 df-ilim 4514 df-suc 4516 df-iom 4738 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-recs 6576 df-frec 6662 df-pnf 8362 df-mnf 8363 df-xr 8364 df-ltxr 8365 df-le 8366 df-sub 8499 df-neg 8500 df-reap 8904 df-ap 8911 df-div 9004 df-inn 9306 df-n0 9566 df-z 9647 df-uz 9924 df-seqfrec 10887 df-exp 10978

This theorem is used by: exprecap 11019

W3C validator