modqcyc2 - Intuitionistic Logic Explorer

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Theorem modqcyc2 9654

Description: The modulo operation is periodic. (Contributed by Jim Kingdon, 21-Oct-2021.)

**Assertion**
Ref	Expression
modqcyc2	⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = (𝐴 mod 𝐵))

**Proof of Theorem modqcyc2**
Step	Hyp	Ref	Expression
1		simplr 497	. . . . . . . 8 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → 𝑁 ∈ ℤ)
2	1	zcnd 8763	. . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → 𝑁 ∈ ℂ)
3		qcn 9012	. . . . . . . 8 ⊢ (𝐵 ∈ ℚ → 𝐵 ∈ ℂ)
4	3	ad2antrl 474	. . . . . . 7 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → 𝐵 ∈ ℂ)
5	2, 4	mulneg1d 7790	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (-𝑁 · 𝐵) = -(𝑁 · 𝐵))
6		mulcom 7372	. . . . . . . 8 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → (𝐵 · 𝑁) = (𝑁 · 𝐵))
7	6	negeqd 7578	. . . . . . 7 ⊢ ((𝐵 ∈ ℂ ∧ 𝑁 ∈ ℂ) → -(𝐵 · 𝑁) = -(𝑁 · 𝐵))
8	4, 2, 7	syl2anc 403	. . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → -(𝐵 · 𝑁) = -(𝑁 · 𝐵))
9	5, 8	eqtr4d 2118	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (-𝑁 · 𝐵) = -(𝐵 · 𝑁))
10	9	oveq2d 5605	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (𝐴 + (-𝑁 · 𝐵)) = (𝐴 + -(𝐵 · 𝑁)))
11		qcn 9012	. . . . . 6 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℂ)
12	11	ad2antrr 472	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → 𝐴 ∈ ℂ)
13	4, 2	mulcld 7409	. . . . 5 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (𝐵 · 𝑁) ∈ ℂ)
14	12, 13	negsubd 7700	. . . 4 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (𝐴 + -(𝐵 · 𝑁)) = (𝐴 − (𝐵 · 𝑁)))
15	10, 14	eqtr2d 2116	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → (𝐴 − (𝐵 · 𝑁)) = (𝐴 + (-𝑁 · 𝐵)))
16	15	oveq1d 5604	. 2 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵))
17		znegcl 8675	. . 3 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ)
18		modqcyc 9653	. . 3 ⊢ (((𝐴 ∈ ℚ ∧ -𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
19	17, 18	sylanl2 395	. 2 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → ((𝐴 + (-𝑁 · 𝐵)) mod 𝐵) = (𝐴 mod 𝐵))
20	16, 19	eqtrd 2115	1 ⊢ (((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) ∧ (𝐵 ∈ ℚ ∧ 0 < 𝐵)) → ((𝐴 − (𝐵 · 𝑁)) mod 𝐵) = (𝐴 mod 𝐵))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 102 = wceq 1285 ∈ wcel 1434 class class class wbr 3811 (class class class)co 5589 ℂcc 7249 0cc0 7251 + caddc 7254 · cmul 7256 < clt 7423 − cmin 7554 -cneg 7555 ℤcz 8644 ℚcq 8997 mod cmo 9616

This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3922 ax-pow 3974 ax-pr 3999 ax-un 4223 ax-setind 4315 ax-cnex 7337 ax-resscn 7338 ax-1cn 7339 ax-1re 7340 ax-icn 7341 ax-addcl 7342 ax-addrcl 7343 ax-mulcl 7344 ax-mulrcl 7345 ax-addcom 7346 ax-mulcom 7347 ax-addass 7348 ax-mulass 7349 ax-distr 7350 ax-i2m1 7351 ax-0lt1 7352 ax-1rid 7353 ax-0id 7354 ax-rnegex 7355 ax-precex 7356 ax-cnre 7357 ax-pre-ltirr 7358 ax-pre-ltwlin 7359 ax-pre-lttrn 7360 ax-pre-apti 7361 ax-pre-ltadd 7362 ax-pre-mulgt0 7363 ax-pre-mulext 7364 ax-arch 7365

This theorem depends on definitions: df-bi 115 df-3or 921 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1688 df-eu 1946 df-mo 1947 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ne 2250 df-nel 2345 df-ral 2358 df-rex 2359 df-reu 2360 df-rmo 2361 df-rab 2362 df-v 2614 df-sbc 2827 df-csb 2920 df-dif 2986 df-un 2988 df-in 2990 df-ss 2997 df-pw 3408 df-sn 3428 df-pr 3429 df-op 3431 df-uni 3628 df-int 3663 df-iun 3706 df-br 3812 df-opab 3866 df-mpt 3867 df-id 4083 df-po 4086 df-iso 4087 df-xp 4405 df-rel 4406 df-cnv 4407 df-co 4408 df-dm 4409 df-rn 4410 df-res 4411 df-ima 4412 df-iota 4932 df-fun 4969 df-fn 4970 df-f 4971 df-fv 4975 df-riota 5545 df-ov 5592 df-oprab 5593 df-mpt2 5594 df-1st 5844 df-2nd 5845 df-pnf 7425 df-mnf 7426 df-xr 7427 df-ltxr 7428 df-le 7429 df-sub 7556 df-neg 7557 df-reap 7950 df-ap 7957 df-div 8036 df-inn 8315 df-n0 8564 df-z 8645 df-q 8998 df-rp 9028 df-fl 9564 df-mod 9617

This theorem is referenced by: modqadd1 9655 modqmul1 9671 q2submod 9679 modqsubdir 9687

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