mulexpzap - Intuitionistic Logic Explorer

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Theorem mulexpzap 10768

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 9428	. . 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 10767	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
6	5	3expa 1208	. . . . 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 8135	. . . . . 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 8773	. . . . . 6 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴 · 𝐵) # 0)
14		recn 8100	. . . . . . 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 9344	. . . . . . 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 10737	. . . . . 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 1253	. . . . 5 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = (1 / ((𝐴 · 𝐵)↑-𝑁)))
20		expineg2 10737	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
21	8, 11, 15, 17, 20	syl22anc 1253	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑𝑁) = (1 / (𝐴↑-𝑁)))
22		expineg2 10737	. . . . . . . 8 ⊢ (((𝐵 ∈ ℂ ∧ 𝐵 # 0) ∧ (𝑁 ∈ ℂ ∧ -𝑁 ∈ ℕ₀)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
23	9, 12, 15, 17, 22	syl22anc 1253	. . . . . . 7 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑𝑁) = (1 / (𝐵↑-𝑁)))
24	21, 23	oveq12d 5992	. . . . . 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 10767	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ -𝑁 ∈ ℕ₀) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
26	8, 9, 17, 25	syl3anc 1252	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑-𝑁) = ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
27	26	oveq2d 5990	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (1 / ((𝐴 · 𝐵)↑-𝑁)) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁))))
28		1t1e1 9231	. . . . . . . . 9 ⊢ (1 · 1) = 1
29	28	oveq1i 5984	. . . . . . . 8 ⊢ ((1 · 1) / ((𝐴↑-𝑁) · (𝐵↑-𝑁))) = (1 / ((𝐴↑-𝑁) · (𝐵↑-𝑁)))
30	27, 29	eqtr4di 2260	. . . . . . 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 10746	. . . . . . . . 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 9433	. . . . . . . . . 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 10760	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 # 0 ∧ -𝑁 ∈ ℤ) → (𝐴↑-𝑁) # 0)
36	8, 11, 34, 35	syl3anc 1252	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐴↑-𝑁) # 0)
37		expcl 10746	. . . . . . . . 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 10760	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0 ∧ -𝑁 ∈ ℤ) → (𝐵↑-𝑁) # 0)
40	9, 12, 34, 39	syl3anc 1252	. . . . . . . 8 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝐵↑-𝑁) # 0)
41		ax-1cn 8060	. . . . . . . . 9 ⊢ 1 ∈ ℂ
42		divmuldivap 8827	. . . . . . . . 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 1253	. . . . . . 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 2245	. . . . . 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 2245	. . . . 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 2245	. . . 4 ⊢ ((((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → ((𝐴 · 𝐵)↑𝑁) = ((𝐴↑𝑁) · (𝐵↑𝑁)))
48	7, 47	jaodan 801	. . 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 1199	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 712 ∧ w3a 983 = wceq 1375 ∈ wcel 2180 class class class wbr 4062 (class class class)co 5974 ℂcc 7965 ℝcr 7966 0cc0 7967 1c1 7968 · cmul 7972 -cneg 8286 # cap 8696 / cdiv 8787 ℕcn 9078 ℕ₀cn0 9337 ℤcz 9414 ↑cexp 10727

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 617 ax-in2 618 ax-io 713 ax-5 1473 ax-7 1474 ax-gen 1475 ax-ie1 1519 ax-ie2 1520 ax-8 1530 ax-10 1531 ax-11 1532 ax-i12 1533 ax-bndl 1535 ax-4 1536 ax-17 1552 ax-i9 1556 ax-ial 1560 ax-i5r 1561 ax-13 2182 ax-14 2183 ax-ext 2191 ax-coll 4178 ax-sep 4181 ax-nul 4189 ax-pow 4237 ax-pr 4272 ax-un 4501 ax-setind 4606 ax-iinf 4657 ax-cnex 8058 ax-resscn 8059 ax-1cn 8060 ax-1re 8061 ax-icn 8062 ax-addcl 8063 ax-addrcl 8064 ax-mulcl 8065 ax-mulrcl 8066 ax-addcom 8067 ax-mulcom 8068 ax-addass 8069 ax-mulass 8070 ax-distr 8071 ax-i2m1 8072 ax-0lt1 8073 ax-1rid 8074 ax-0id 8075 ax-rnegex 8076 ax-precex 8077 ax-cnre 8078 ax-pre-ltirr 8079 ax-pre-ltwlin 8080 ax-pre-lttrn 8081 ax-pre-apti 8082 ax-pre-ltadd 8083 ax-pre-mulgt0 8084 ax-pre-mulext 8085

This theorem depends on definitions: df-bi 117 df-dc 839 df-3or 984 df-3an 985 df-tru 1378 df-fal 1381 df-nf 1487 df-sb 1789 df-eu 2060 df-mo 2061 df-clab 2196 df-cleq 2202 df-clel 2205 df-nfc 2341 df-ne 2381 df-nel 2476 df-ral 2493 df-rex 2494 df-reu 2495 df-rmo 2496 df-rab 2497 df-v 2781 df-sbc 3009 df-csb 3105 df-dif 3179 df-un 3181 df-in 3183 df-ss 3190 df-nul 3472 df-if 3583 df-pw 3631 df-sn 3652 df-pr 3653 df-op 3655 df-uni 3868 df-int 3903 df-iun 3946 df-br 4063 df-opab 4125 df-mpt 4126 df-tr 4162 df-id 4361 df-po 4364 df-iso 4365 df-iord 4434 df-on 4436 df-ilim 4437 df-suc 4439 df-iom 4660 df-xp 4702 df-rel 4703 df-cnv 4704 df-co 4705 df-dm 4706 df-rn 4707 df-res 4708 df-ima 4709 df-iota 5254 df-fun 5296 df-fn 5297 df-f 5298 df-f1 5299 df-fo 5300 df-f1o 5301 df-fv 5302 df-riota 5927 df-ov 5977 df-oprab 5978 df-mpo 5979 df-1st 6256 df-2nd 6257 df-recs 6421 df-frec 6507 df-pnf 8151 df-mnf 8152 df-xr 8153 df-ltxr 8154 df-le 8155 df-sub 8287 df-neg 8288 df-reap 8690 df-ap 8697 df-div 8788 df-inn 9079 df-n0 9338 df-z 9415 df-uz 9691 df-seqfrec 10637 df-exp 10728

This theorem is referenced by: exprecap 10769

W3C validator