modqdi - Intuitionistic Logic Explorer

	Intuitionistic Logic Explorer		< Previous Next > Nearby theorems
Mirrors > Home > ILE Home > Th. List > modqdi		GIF version

Theorem modqdi 10655

Description: Distribute multiplication over a modulo operation. (Contributed by Jim Kingdon, 26-Oct-2021.)

**Assertion**
Ref	Expression
modqdi	⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐵 mod 𝐶)) = ((𝐴 · 𝐵) mod (𝐴 · 𝐶)))

**Proof of Theorem modqdi**
Step	Hyp	Ref	Expression
1		simp1l 1047	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐴 ∈ ℚ)
2		qcn 9868	. . . . 5 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℂ)
3	1, 2	syl 14	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐴 ∈ ℂ)
4		simp2 1024	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐵 ∈ ℚ)
5		qcn 9868	. . . . 5 ⊢ (𝐵 ∈ ℚ → 𝐵 ∈ ℂ)
6	4, 5	syl 14	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐵 ∈ ℂ)
7		simp3l 1051	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐶 ∈ ℚ)
8		simp3r 1052	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 0 < 𝐶)
9	8	gt0ne0d 8692	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐶 ≠ 0)
10		qdivcl 9877	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℚ ∧ 𝐶 ∈ ℚ ∧ 𝐶 ≠ 0) → (𝐵 / 𝐶) ∈ ℚ)
11	4, 7, 9, 10	syl3anc 1273	. . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐵 / 𝐶) ∈ ℚ)
12	11	flqcld 10538	. . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (⌊‘(𝐵 / 𝐶)) ∈ ℤ)
13		zq 9860	. . . . . . 7 ⊢ ((⌊‘(𝐵 / 𝐶)) ∈ ℤ → (⌊‘(𝐵 / 𝐶)) ∈ ℚ)
14	12, 13	syl 14	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (⌊‘(𝐵 / 𝐶)) ∈ ℚ)
15		qmulcl 9871	. . . . . 6 ⊢ ((𝐶 ∈ ℚ ∧ (⌊‘(𝐵 / 𝐶)) ∈ ℚ) → (𝐶 · (⌊‘(𝐵 / 𝐶))) ∈ ℚ)
16	7, 14, 15	syl2anc 411	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐶 · (⌊‘(𝐵 / 𝐶))) ∈ ℚ)
17		qcn 9868	. . . . 5 ⊢ ((𝐶 · (⌊‘(𝐵 / 𝐶))) ∈ ℚ → (𝐶 · (⌊‘(𝐵 / 𝐶))) ∈ ℂ)
18	16, 17	syl 14	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐶 · (⌊‘(𝐵 / 𝐶))) ∈ ℂ)
19	3, 6, 18	subdid 8593	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐵 − (𝐶 · (⌊‘(𝐵 / 𝐶))))) = ((𝐴 · 𝐵) − (𝐴 · (𝐶 · (⌊‘(𝐵 / 𝐶))))))
20		qcn 9868	. . . . . . . . 9 ⊢ (𝐶 ∈ ℚ → 𝐶 ∈ ℂ)
21	7, 20	syl 14	. . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐶 ∈ ℂ)
22		qre 9859	. . . . . . . . . 10 ⊢ (𝐶 ∈ ℚ → 𝐶 ∈ ℝ)
23	7, 22	syl 14	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐶 ∈ ℝ)
24	23, 8	gt0ap0d 8809	. . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐶 # 0)
25		qre 9859	. . . . . . . . . 10 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℝ)
26	1, 25	syl 14	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐴 ∈ ℝ)
27		simp1r 1048	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 0 < 𝐴)
28	26, 27	gt0ap0d 8809	. . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 𝐴 # 0)
29	6, 21, 3, 24, 28	divcanap5d 8997	. . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → ((𝐴 · 𝐵) / (𝐴 · 𝐶)) = (𝐵 / 𝐶))
30	29	fveq2d 5643	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶))) = (⌊‘(𝐵 / 𝐶)))
31	30	oveq2d 6034	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶)))) = ((𝐴 · 𝐶) · (⌊‘(𝐵 / 𝐶))))
32	12	zcnd 9603	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (⌊‘(𝐵 / 𝐶)) ∈ ℂ)
33	3, 21, 32	mulassd 8203	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → ((𝐴 · 𝐶) · (⌊‘(𝐵 / 𝐶))) = (𝐴 · (𝐶 · (⌊‘(𝐵 / 𝐶)))))
34	31, 33	eqtr2d 2265	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐶 · (⌊‘(𝐵 / 𝐶)))) = ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶)))))
35	34	oveq2d 6034	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → ((𝐴 · 𝐵) − (𝐴 · (𝐶 · (⌊‘(𝐵 / 𝐶))))) = ((𝐴 · 𝐵) − ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶))))))
36	19, 35	eqtrd 2264	. 2 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐵 − (𝐶 · (⌊‘(𝐵 / 𝐶))))) = ((𝐴 · 𝐵) − ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶))))))
37		modqval 10587	. . . 4 ⊢ ((𝐵 ∈ ℚ ∧ 𝐶 ∈ ℚ ∧ 0 < 𝐶) → (𝐵 mod 𝐶) = (𝐵 − (𝐶 · (⌊‘(𝐵 / 𝐶)))))
38	4, 7, 8, 37	syl3anc 1273	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐵 mod 𝐶) = (𝐵 − (𝐶 · (⌊‘(𝐵 / 𝐶)))))
39	38	oveq2d 6034	. 2 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐵 mod 𝐶)) = (𝐴 · (𝐵 − (𝐶 · (⌊‘(𝐵 / 𝐶))))))
40		qmulcl 9871	. . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝐵 ∈ ℚ) → (𝐴 · 𝐵) ∈ ℚ)
41	1, 4, 40	syl2anc 411	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · 𝐵) ∈ ℚ)
42		qmulcl 9871	. . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝐶 ∈ ℚ) → (𝐴 · 𝐶) ∈ ℚ)
43	1, 7, 42	syl2anc 411	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · 𝐶) ∈ ℚ)
44	26, 23, 27, 8	mulgt0d 8302	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → 0 < (𝐴 · 𝐶))
45		modqval 10587	. . 3 ⊢ (((𝐴 · 𝐵) ∈ ℚ ∧ (𝐴 · 𝐶) ∈ ℚ ∧ 0 < (𝐴 · 𝐶)) → ((𝐴 · 𝐵) mod (𝐴 · 𝐶)) = ((𝐴 · 𝐵) − ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶))))))
46	41, 43, 44, 45	syl3anc 1273	. 2 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → ((𝐴 · 𝐵) mod (𝐴 · 𝐶)) = ((𝐴 · 𝐵) − ((𝐴 · 𝐶) · (⌊‘((𝐴 · 𝐵) / (𝐴 · 𝐶))))))
47	36, 39, 46	3eqtr4d 2274	1 ⊢ (((𝐴 ∈ ℚ ∧ 0 < 𝐴) ∧ 𝐵 ∈ ℚ ∧ (𝐶 ∈ ℚ ∧ 0 < 𝐶)) → (𝐴 · (𝐵 mod 𝐶)) = ((𝐴 · 𝐵) mod (𝐴 · 𝐶)))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1004 = wceq 1397 ∈ wcel 2202 ≠ wne 2402 class class class wbr 4088 ‘cfv 5326 (class class class)co 6018 ℂcc 8030 ℝcr 8031 0cc0 8032 · cmul 8037 < clt 8214 − cmin 8350 / cdiv 8852 ℤcz 9479 ℚcq 9853 ⌊cfl 10529 mod cmo 10585

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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-mulrcl 8131 ax-addcom 8132 ax-mulcom 8133 ax-addass 8134 ax-mulass 8135 ax-distr 8136 ax-i2m1 8137 ax-0lt1 8138 ax-1rid 8139 ax-0id 8140 ax-rnegex 8141 ax-precex 8142 ax-cnre 8143 ax-pre-ltirr 8144 ax-pre-ltwlin 8145 ax-pre-lttrn 8146 ax-pre-apti 8147 ax-pre-ltadd 8148 ax-pre-mulgt0 8149 ax-pre-mulext 8150 ax-arch 8151

This theorem depends on definitions: df-bi 117 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-po 4393 df-iso 4394 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-fv 5334 df-riota 5971 df-ov 6021 df-oprab 6022 df-mpo 6023 df-1st 6303 df-2nd 6304 df-pnf 8216 df-mnf 8217 df-xr 8218 df-ltxr 8219 df-le 8220 df-sub 8352 df-neg 8353 df-reap 8755 df-ap 8762 df-div 8853 df-inn 9144 df-n0 9403 df-z 9480 df-q 9854 df-rp 9889 df-fl 10531 df-mod 10586

This theorem is referenced by: (None)

W3C validator