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Theorem congrep 36558

Description: Every integer is congruent to some number in the fundamental domain. (Contributed by Stefan O'Rear, 2-Oct-2014.)

**Assertion**
Ref	Expression
congrep	⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → ∃𝑎 ∈ (0...(𝐴 − 1))𝐴 ∥ (𝑎 − 𝑁))

Distinct variable groups: 𝐴,𝑎 𝑁,𝑎

**Proof of Theorem congrep**
Step	Hyp	Ref	Expression
1		zmodfz 12554	. . 3 ⊢ ((𝑁 ∈ ℤ ∧ 𝐴 ∈ ℕ) → (𝑁 mod 𝐴) ∈ (0...(𝐴 − 1)))
2	1	ancoms 468	. 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → (𝑁 mod 𝐴) ∈ (0...(𝐴 − 1)))
3		nnz 11276	. . . 4 ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ ℤ)
4	3	adantr 480	. . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → 𝐴 ∈ ℤ)
5		simpr 476	. . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℤ)
6		zmodcl 12552	. . . . 5 ⊢ ((𝑁 ∈ ℤ ∧ 𝐴 ∈ ℕ) → (𝑁 mod 𝐴) ∈ ℕ₀)
7	6	ancoms 468	. . . 4 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → (𝑁 mod 𝐴) ∈ ℕ₀)
8	7	nn0zd 11356	. . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → (𝑁 mod 𝐴) ∈ ℤ)
9		zre 11258	. . . . 5 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℝ)
10		nnrp 11718	. . . . 5 ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ ℝ⁺)
11		moddifz 12544	. . . . 5 ⊢ ((𝑁 ∈ ℝ ∧ 𝐴 ∈ ℝ⁺) → ((𝑁 − (𝑁 mod 𝐴)) / 𝐴) ∈ ℤ)
12	9, 10, 11	syl2anr 494	. . . 4 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → ((𝑁 − (𝑁 mod 𝐴)) / 𝐴) ∈ ℤ)
13		nnne0 10930	. . . . . 6 ⊢ (𝐴 ∈ ℕ → 𝐴 ≠ 0)
14	13	adantr 480	. . . . 5 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → 𝐴 ≠ 0)
15	5, 8	zsubcld 11363	. . . . 5 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → (𝑁 − (𝑁 mod 𝐴)) ∈ ℤ)
16		dvdsval2 14824	. . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐴 ≠ 0 ∧ (𝑁 − (𝑁 mod 𝐴)) ∈ ℤ) → (𝐴 ∥ (𝑁 − (𝑁 mod 𝐴)) ↔ ((𝑁 − (𝑁 mod 𝐴)) / 𝐴) ∈ ℤ))
17	4, 14, 15, 16	syl3anc 1318	. . . 4 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → (𝐴 ∥ (𝑁 − (𝑁 mod 𝐴)) ↔ ((𝑁 − (𝑁 mod 𝐴)) / 𝐴) ∈ ℤ))
18	12, 17	mpbird 246	. . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → 𝐴 ∥ (𝑁 − (𝑁 mod 𝐴)))
19		congsym 36553	. . 3 ⊢ (((𝐴 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ ((𝑁 mod 𝐴) ∈ ℤ ∧ 𝐴 ∥ (𝑁 − (𝑁 mod 𝐴)))) → 𝐴 ∥ ((𝑁 mod 𝐴) − 𝑁))
20	4, 5, 8, 18, 19	syl22anc 1319	. 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → 𝐴 ∥ ((𝑁 mod 𝐴) − 𝑁))
21		oveq1 6556	. . . 4 ⊢ (𝑎 = (𝑁 mod 𝐴) → (𝑎 − 𝑁) = ((𝑁 mod 𝐴) − 𝑁))
22	21	breq2d 4595	. . 3 ⊢ (𝑎 = (𝑁 mod 𝐴) → (𝐴 ∥ (𝑎 − 𝑁) ↔ 𝐴 ∥ ((𝑁 mod 𝐴) − 𝑁)))
23	22	rspcev 3282	. 2 ⊢ (((𝑁 mod 𝐴) ∈ (0...(𝐴 − 1)) ∧ 𝐴 ∥ ((𝑁 mod 𝐴) − 𝑁)) → ∃𝑎 ∈ (0...(𝐴 − 1))𝐴 ∥ (𝑎 − 𝑁))
24	2, 20, 23	syl2anc 691	1 ⊢ ((𝐴 ∈ ℕ ∧ 𝑁 ∈ ℤ) → ∃𝑎 ∈ (0...(𝐴 − 1))𝐴 ∥ (𝑎 − 𝑁))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ≠ wne 2780 ∃wrex 2897 class class class wbr 4583 (class class class)co 6549 ℝcr 9814 0cc0 9815 1c1 9816 − cmin 10145 / cdiv 10563 ℕcn 10897 ℕ₀cn0 11169 ℤcz 11254 ℝ⁺crp 11708 ...cfz 12197 mod cmo 12530 ∥ cdvds 14821

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893

This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-n0 11170 df-z 11255 df-uz 11564 df-rp 11709 df-fz 12198 df-fl 12455 df-mod 12531 df-dvds 14822

This theorem is referenced by: acongrep 36565

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