modcyc2 - Metamath Proof Explorer

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Theorem modcyc2 13857

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 11119	. . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ)
2		rpcn 12944	. . . 4 ⊢ (𝐵 ∈ ℝ⁺ → 𝐵 ∈ ℂ)
3		zcn 12520	. . . 4 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ)
4		mulneg1 11577	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝑁 · 𝐵))
5	4	ancoms 458	. . . . . . . 8 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝑁 · 𝐵))
6		mulcom 11115	. . . . . . . . 9 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐵 · 𝑁) = (𝑁 · 𝐵))
7	6	negeqd 11378	. . . . . . . 8 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → -(𝐵 · 𝑁) = -(𝑁 · 𝐵))
8	5, 7	eqtr4d 2775	. . . . . . 7 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝐵 · 𝑁))
9	8	3adant1 1131	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (-𝑁 · 𝐵) = -(𝐵 · 𝑁))
10	9	oveq2d 7376	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 + (-𝑁 · 𝐵)) = (𝐴 + -(𝐵 · 𝑁)))
11		mulcl 11113	. . . . . . 7 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐵 · 𝑁) ∈ ℂ)
12		negsub 11433	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 · 𝑁) ∈ ℂ) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
13	11, 12	sylan2 594	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ)) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
14	13	3impb 1115	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
15	10, 14	eqtr2d 2773	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐴 − (𝐵 · 𝑁)) = (𝐴 + (-𝑁 · 𝐵)))
16	1, 2, 3, 15	syl3an 1161	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → (𝐴 − (𝐵 · 𝑁)) = (𝐴 + (-𝑁 · 𝐵)))
17	16	oveq1d 7375	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵))
18		znegcl 12553	. . 3 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ)
19		modcyc 13856	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ -𝑁 ∈ ℤ) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
20	18, 19	syl3an3 1166	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ⁺ ∧ 𝑁 ∈ ℤ) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
21	17, 20	eqtrd 2772	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 1087 = wceq 1542 ∈ wcel 2114 (class class class)co 7360 ℂcc 11027 ℝcr 11028 + caddc 11032 · cmul 11034 − cmin 11368 -cneg 11369 ℤcz 12515 ℝ⁺crp 12933 mod cmo 13819

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-sup 9348 df-inf 9349 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-n0 12429 df-z 12516 df-uz 12780 df-rp 12934 df-fl 13742 df-mod 13820

This theorem is referenced by: modadd1 13858 modmul1 13877 2submod 13885 modsubdir 13893

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