modqmulnn - Intuitionistic Logic Explorer

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Theorem modqmulnn 10711

Description: Move a positive integer in and out of a floor in the first argument of a modulo operation. (Contributed by Jim Kingdon, 18-Oct-2021.)

**Assertion**
Ref	Expression
modqmulnn	⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) mod (𝑁 · 𝑀)) ≤ ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)))

**Proof of Theorem modqmulnn**
Step	Hyp	Ref	Expression
1		nnq 9971	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℚ)
2	1	3ad2ant1 1045	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℚ)
3		flqcl 10640	. . . . . . 7 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℤ)
4		zq 9964	. . . . . . 7 ⊢ ((⌊‘𝐴) ∈ ℤ → (⌊‘𝐴) ∈ ℚ)
5	3, 4	syl 14	. . . . . 6 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℚ)
6	5	3ad2ant2 1046	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘𝐴) ∈ ℚ)
7		qmulcl 9975	. . . . 5 ⊢ ((𝑁 ∈ ℚ ∧ (⌊‘𝐴) ∈ ℚ) → (𝑁 · (⌊‘𝐴)) ∈ ℚ)
8	2, 6, 7	syl2anc 411	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · (⌊‘𝐴)) ∈ ℚ)
9		qre 9963	. . . 4 ⊢ ((𝑁 · (⌊‘𝐴)) ∈ ℚ → (𝑁 · (⌊‘𝐴)) ∈ ℝ)
10	8, 9	syl 14	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · (⌊‘𝐴)) ∈ ℝ)
11		simp2 1025	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝐴 ∈ ℚ)
12		qmulcl 9975	. . . . . 6 ⊢ ((𝑁 ∈ ℚ ∧ 𝐴 ∈ ℚ) → (𝑁 · 𝐴) ∈ ℚ)
13	2, 11, 12	syl2anc 411	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝐴) ∈ ℚ)
14	13	flqcld 10644	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℤ)
15	14	zred 9706	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℝ)
16		nnmulcl 9263	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℕ)
17		nnq 9971	. . . . . . 7 ⊢ ((𝑁 · 𝑀) ∈ ℕ → (𝑁 · 𝑀) ∈ ℚ)
18	16, 17	syl 14	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℚ)
19	18	3adant2 1043	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℚ)
20		qre 9963	. . . . 5 ⊢ ((𝑁 · 𝑀) ∈ ℚ → (𝑁 · 𝑀) ∈ ℝ)
21	19, 20	syl 14	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℝ)
22		simp1 1024	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℕ)
23	22	nncnd 9256	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℂ)
24		simp3 1026	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℕ)
25	24	nncnd 9256	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℂ)
26	22	nnap0d 9288	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 # 0)
27	24	nnap0d 9288	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 # 0)
28	23, 25, 26, 27	mulap0d 8937	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) # 0)
29		0z 9593	. . . . . . . . . 10 ⊢ 0 ∈ ℤ
30		zq 9964	. . . . . . . . . 10 ⊢ (0 ∈ ℤ → 0 ∈ ℚ)
31	29, 30	ax-mp 5	. . . . . . . . 9 ⊢ 0 ∈ ℚ
32		qapne 9977	. . . . . . . . 9 ⊢ (((𝑁 · 𝑀) ∈ ℚ ∧ 0 ∈ ℚ) → ((𝑁 · 𝑀) # 0 ↔ (𝑁 · 𝑀) ≠ 0))
33	19, 31, 32	sylancl 413	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝑀) # 0 ↔ (𝑁 · 𝑀) ≠ 0))
34	28, 33	mpbid 147	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ≠ 0)
35		qdivcl 9981	. . . . . . 7 ⊢ (((𝑁 · (⌊‘𝐴)) ∈ ℚ ∧ (𝑁 · 𝑀) ∈ ℚ ∧ (𝑁 · 𝑀) ≠ 0) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) ∈ ℚ)
36	8, 19, 34, 35	syl3anc 1274	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) ∈ ℚ)
37	36	flqcld 10644	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) ∈ ℤ)
38	37	zred 9706	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) ∈ ℝ)
39	21, 38	remulcld 8309	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)))) ∈ ℝ)
40		nnnn0 9508	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
41		flqmulnn0 10666	. . . . 5 ⊢ ((𝑁 ∈ ℕ₀ ∧ 𝐴 ∈ ℚ) → (𝑁 · (⌊‘𝐴)) ≤ (⌊‘(𝑁 · 𝐴)))
42	40, 41	sylan 283	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ) → (𝑁 · (⌊‘𝐴)) ≤ (⌊‘(𝑁 · 𝐴)))
43	22, 11, 42	syl2anc 411	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · (⌊‘𝐴)) ≤ (⌊‘(𝑁 · 𝐴)))
44	10, 15, 39, 43	lesub1dd 8840	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))) ≤ ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
45	22	nnred 9255	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℝ)
46	24	nnred 9255	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℝ)
47	22	nngt0d 9286	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < 𝑁)
48	24	nngt0d 9286	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < 𝑀)
49	45, 46, 47, 48	mulgt0d 8401	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < (𝑁 · 𝑀))
50		modqval 10693	. . 3 ⊢ (((𝑁 · (⌊‘𝐴)) ∈ ℚ ∧ (𝑁 · 𝑀) ∈ ℚ ∧ 0 < (𝑁 · 𝑀)) → ((𝑁 · (⌊‘𝐴)) mod (𝑁 · 𝑀)) = ((𝑁 · (⌊‘𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
51	8, 19, 49, 50	syl3anc 1274	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) mod (𝑁 · 𝑀)) = ((𝑁 · (⌊‘𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
52		zq 9964	. . . . 5 ⊢ ((⌊‘(𝑁 · 𝐴)) ∈ ℤ → (⌊‘(𝑁 · 𝐴)) ∈ ℚ)
53	14, 52	syl 14	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℚ)
54		modqval 10693	. . . 4 ⊢ (((⌊‘(𝑁 · 𝐴)) ∈ ℚ ∧ (𝑁 · 𝑀) ∈ ℚ ∧ 0 < (𝑁 · 𝑀)) → ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)) = ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))))))
55	53, 19, 49, 54	syl3anc 1274	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)) = ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))))))
56	16	3adant2 1043	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℕ)
57		flqdiv 10690	. . . . . . 7 ⊢ (((𝑁 · 𝐴) ∈ ℚ ∧ (𝑁 · 𝑀) ∈ ℕ) → (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))))
58	13, 56, 57	syl2anc 411	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))))
59		flqdiv 10690	. . . . . . . 8 ⊢ ((𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘𝐴) / 𝑀)) = (⌊‘(𝐴 / 𝑀)))
60	59	3adant1 1042	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘𝐴) / 𝑀)) = (⌊‘(𝐴 / 𝑀)))
61	3	zcnd 9707	. . . . . . . . . 10 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℂ)
62	11, 61	syl 14	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘𝐴) ∈ ℂ)
63	62, 25, 23, 27, 26	divcanap5d 9096	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) = ((⌊‘𝐴) / 𝑀))
64	63	fveq2d 5676	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) = (⌊‘((⌊‘𝐴) / 𝑀)))
65		qcn 9972	. . . . . . . . . 10 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℂ)
66	11, 65	syl 14	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝐴 ∈ ℂ)
67	66, 25, 23, 27, 26	divcanap5d 9096	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝐴) / (𝑁 · 𝑀)) = (𝐴 / 𝑀))
68	67	fveq2d 5676	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))) = (⌊‘(𝐴 / 𝑀)))
69	60, 64, 68	3eqtr4rd 2278	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))
70	58, 69	eqtrd 2267	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))
71	70	oveq2d 6068	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀)))) = ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)))))
72	71	oveq2d 6068	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))))) = ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
73	55, 72	eqtrd 2267	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)) = ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
74	44, 51, 73	3brtr4d 4143	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) mod (𝑁 · 𝑀)) ≤ ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 1005 = wceq 1398 ∈ wcel 2205 ≠ wne 2414 class class class wbr 4111 ‘cfv 5354 (class class class)co 6052 ℂcc 8130 ℝcr 8131 0cc0 8132 · cmul 8137 < clt 8313 ≤ cle 8314 − cmin 8449 # cap 8860 / cdiv 8951 ℕcn 9242 ℕ₀cn0 9501 ℤcz 9582 ℚcq 9957 ⌊cfl 10635 mod cmo 10691

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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-cnex 8223 ax-resscn 8224 ax-1cn 8225 ax-1re 8226 ax-icn 8227 ax-addcl 8228 ax-addrcl 8229 ax-mulcl 8230 ax-mulrcl 8231 ax-addcom 8232 ax-mulcom 8233 ax-addass 8234 ax-mulass 8235 ax-distr 8236 ax-i2m1 8237 ax-0lt1 8238 ax-1rid 8239 ax-0id 8240 ax-rnegex 8241 ax-precex 8242 ax-cnre 8243 ax-pre-ltirr 8244 ax-pre-ltwlin 8245 ax-pre-lttrn 8246 ax-pre-apti 8247 ax-pre-ltadd 8248 ax-pre-mulgt0 8249 ax-pre-mulext 8250 ax-arch 8251

This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-po 4419 df-iso 4420 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-fv 5362 df-riota 6005 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-pnf 8315 df-mnf 8316 df-xr 8317 df-ltxr 8318 df-le 8319 df-sub 8451 df-neg 8452 df-reap 8854 df-ap 8861 df-div 8952 df-inn 9243 df-n0 9502 df-z 9583 df-q 9958 df-rp 9993 df-fl 10637 df-mod 10692

This theorem is referenced by: (None)

W3C validator