modcyc2 - Metamath Proof Explorer

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Theorem modcyc2 13929

Description: The modulo operation is periodic. (Contributed by NM, 12-Nov-2008.)

**Assertion**
Ref	Expression
modcyc2	⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = (𝐴 mod 𝐵))

**Proof of Theorem modcyc2**
Step	Hyp	Ref	Expression
1		recn 11224	. . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ)
2		rpcn 13024	. . . 4 ⊢ (𝐵 ∈ ℝ⁺ → 𝐵 ∈ ℂ)
3		zcn 12598	. . . 4 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ)
4		mulneg1 11678	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝑁 · 𝐵))
5	4	ancoms 458	. . . . . . . 8 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝑁 · 𝐵))
6		mulcom 11220	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐵 · 𝑁) = (𝑁 · 𝐵))
7	6	negeqd 11481	. . . . . . . 8 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → -(𝐵 · 𝑁) = -(𝑁 · 𝐵))
8	5, 7	eqtr4d 2774	. . . . . . 7 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝐵 · 𝑁))
9	8	3adant1 1130	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝐵 · 𝑁))
10	9	oveq2d 7426	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 + (-𝑁 · 𝐵)) = (𝐴 + -(𝐵 · 𝑁)))
11		mulcl 11218	. . . . . . 7 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐵 · 𝑁) ∈ ℂ)
12		negsub 11536	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 · 𝑁) ∈ ℂ) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
13	11, 12	sylan2 593	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ)) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
14	13	3impb 1114	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
15	10, 14	eqtr2d 2772	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 − (𝐵 · 𝑁)) = (𝐴 + (-𝑁 · 𝐵)))
16	1, 2, 3, 15	syl3an 1160	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → (𝐴 − (𝐵 · 𝑁)) = (𝐴 + (-𝑁 · 𝐵)))
17	16	oveq1d 7425	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵))
18		znegcl 12632	. . 3 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ)
19		modcyc 13928	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ -𝑁 ∈ ℤ) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
20	18, 19	syl3an3 1165	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
21	17, 20	eqtrd 2771	1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = (𝐴 mod 𝐵))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 (class class class)co 7410 ℂcc 11132 ℝcr 11133 + caddc 11137 · cmul 11139 − cmin 11471 -cneg 11472 ℤcz 12593 ℝ⁺crp 13013 mod cmo 13891

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2708 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 ax-cnex 11190 ax-resscn 11191 ax-1cn 11192 ax-icn 11193 ax-addcl 11194 ax-addrcl 11195 ax-mulcl 11196 ax-mulrcl 11197 ax-mulcom 11198 ax-addass 11199 ax-mulass 11200 ax-distr 11201 ax-i2m1 11202 ax-1ne0 11203 ax-1rid 11204 ax-rnegex 11205 ax-rrecex 11206 ax-cnre 11207 ax-pre-lttri 11208 ax-pre-lttrn 11209 ax-pre-ltadd 11210 ax-pre-mulgt0 11211 ax-pre-sup 11212

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3364 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6295 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7867 df-2nd 7994 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-er 8724 df-en 8965 df-dom 8966 df-sdom 8967 df-sup 9459 df-inf 9460 df-pnf 11276 df-mnf 11277 df-xr 11278 df-ltxr 11279 df-le 11280 df-sub 11473 df-neg 11474 df-div 11900 df-nn 12246 df-n0 12507 df-z 12594 df-uz 12858 df-rp 13014 df-fl 13814 df-mod 13892

This theorem is referenced by: modadd1 13930 modmul1 13947 2submod 13955 modsubdir 13963

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