modqmulnn - Intuitionistic Logic Explorer

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Theorem modqmulnn 10328

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 9622	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℚ)
2	1	3ad2ant1 1018	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℚ)
3		flqcl 10259	. . . . . . 7 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℤ)
4		zq 9615	. . . . . . 7 ⊢ ((⌊‘𝐴) ∈ ℤ → (⌊‘𝐴) ∈ ℚ)
5	3, 4	syl 14	. . . . . 6 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℚ)
6	5	3ad2ant2 1019	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘𝐴) ∈ ℚ)
7		qmulcl 9626	. . . . 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 9614	. . . 4 ⊢ ((𝑁 · (⌊‘𝐴)) ∈ ℚ → (𝑁 · (⌊‘𝐴)) ∈ ℝ)
10	8, 9	syl 14	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · (⌊‘𝐴)) ∈ ℝ)
11		simp2 998	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝐴 ∈ ℚ)
12		qmulcl 9626	. . . . . 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 10263	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℤ)
15	14	zred 9364	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℝ)
16		nnmulcl 8929	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℕ)
17		nnq 9622	. . . . . . 7 ⊢ ((𝑁 · 𝑀) ∈ ℕ → (𝑁 · 𝑀) ∈ ℚ)
18	16, 17	syl 14	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℚ)
19	18	3adant2 1016	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℚ)
20		qre 9614	. . . . 5 ⊢ ((𝑁 · 𝑀) ∈ ℚ → (𝑁 · 𝑀) ∈ ℝ)
21	19, 20	syl 14	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℝ)
22		simp1 997	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℕ)
23	22	nncnd 8922	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℂ)
24		simp3 999	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℕ)
25	24	nncnd 8922	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℂ)
26	22	nnap0d 8954	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 # 0)
27	24	nnap0d 8954	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 # 0)
28	23, 25, 26, 27	mulap0d 8604	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) # 0)
29		0z 9253	. . . . . . . . . 10 ⊢ 0 ∈ ℤ
30		zq 9615	. . . . . . . . . 10 ⊢ (0 ∈ ℤ → 0 ∈ ℚ)
31	29, 30	ax-mp 5	. . . . . . . . 9 ⊢ 0 ∈ ℚ
32		qapne 9628	. . . . . . . . 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 9632	. . . . . . 7 ⊢ (((𝑁 · (⌊‘𝐴)) ∈ ℚ ∧ (𝑁 · 𝑀) ∈ ℚ ∧ (𝑁 · 𝑀) ≠ 0) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) ∈ ℚ)
36	8, 19, 34, 35	syl3anc 1238	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) ∈ ℚ)
37	36	flqcld 10263	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) ∈ ℤ)
38	37	zred 9364	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) ∈ ℝ)
39	21, 38	remulcld 7978	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)))) ∈ ℝ)
40		nnnn0 9172	. . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
41		flqmulnn0 10285	. . . . 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 8508	. 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 8921	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑁 ∈ ℝ)
46	24	nnred 8921	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 𝑀 ∈ ℝ)
47	22	nngt0d 8952	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < 𝑁)
48	24	nngt0d 8952	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < 𝑀)
49	45, 46, 47, 48	mulgt0d 8070	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → 0 < (𝑁 · 𝑀))
50		modqval 10310	. . 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 1238	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) mod (𝑁 · 𝑀)) = ((𝑁 · (⌊‘𝐴)) − ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))))
52		zq 9615	. . . . 5 ⊢ ((⌊‘(𝑁 · 𝐴)) ∈ ℤ → (⌊‘(𝑁 · 𝐴)) ∈ ℚ)
53	14, 52	syl 14	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘(𝑁 · 𝐴)) ∈ ℚ)
54		modqval 10310	. . . 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 1238	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((⌊‘(𝑁 · 𝐴)) mod (𝑁 · 𝑀)) = ((⌊‘(𝑁 · 𝐴)) − ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))))))
56	16	3adant2 1016	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (𝑁 · 𝑀) ∈ ℕ)
57		flqdiv 10307	. . . . . . 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 10307	. . . . . . . 8 ⊢ ((𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘𝐴) / 𝑀)) = (⌊‘(𝐴 / 𝑀)))
60	59	3adant1 1015	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘𝐴) / 𝑀)) = (⌊‘(𝐴 / 𝑀)))
61	3	zcnd 9365	. . . . . . . . . 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 8763	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)) = ((⌊‘𝐴) / 𝑀))
64	63	fveq2d 5515	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))) = (⌊‘((⌊‘𝐴) / 𝑀)))
65		qcn 9623	. . . . . . . . . 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 8763	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝐴) / (𝑁 · 𝑀)) = (𝐴 / 𝑀))
68	67	fveq2d 5515	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))) = (⌊‘(𝐴 / 𝑀)))
69	60, 64, 68	3eqtr4rd 2221	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((𝑁 · 𝐴) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))
70	58, 69	eqtrd 2210	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀))) = (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀))))
71	70	oveq2d 5885	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℚ ∧ 𝑀 ∈ ℕ) → ((𝑁 · 𝑀) · (⌊‘((⌊‘(𝑁 · 𝐴)) / (𝑁 · 𝑀)))) = ((𝑁 · 𝑀) · (⌊‘((𝑁 · (⌊‘𝐴)) / (𝑁 · 𝑀)))))
72	71	oveq2d 5885	. . 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 2210	. 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 4032	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 978 = wceq 1353 ∈ wcel 2148 ≠ wne 2347 class class class wbr 4000 ‘cfv 5212 (class class class)co 5869 ℂcc 7800 ℝcr 7801 0cc0 7802 · cmul 7807 < clt 7982 ≤ cle 7983 − cmin 8118 # cap 8528 / cdiv 8618 ℕcn 8908 ℕ₀cn0 9165 ℤcz 9242 ℚcq 9608 ⌊cfl 10254 mod cmo 10308

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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-sep 4118 ax-pow 4171 ax-pr 4206 ax-un 4430 ax-setind 4533 ax-cnex 7893 ax-resscn 7894 ax-1cn 7895 ax-1re 7896 ax-icn 7897 ax-addcl 7898 ax-addrcl 7899 ax-mulcl 7900 ax-mulrcl 7901 ax-addcom 7902 ax-mulcom 7903 ax-addass 7904 ax-mulass 7905 ax-distr 7906 ax-i2m1 7907 ax-0lt1 7908 ax-1rid 7909 ax-0id 7910 ax-rnegex 7911 ax-precex 7912 ax-cnre 7913 ax-pre-ltirr 7914 ax-pre-ltwlin 7915 ax-pre-lttrn 7916 ax-pre-apti 7917 ax-pre-ltadd 7918 ax-pre-mulgt0 7919 ax-pre-mulext 7920 ax-arch 7921

This theorem depends on definitions: df-bi 117 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2739 df-sbc 2963 df-csb 3058 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-pw 3576 df-sn 3597 df-pr 3598 df-op 3600 df-uni 3808 df-int 3843 df-iun 3886 df-br 4001 df-opab 4062 df-mpt 4063 df-id 4290 df-po 4293 df-iso 4294 df-xp 4629 df-rel 4630 df-cnv 4631 df-co 4632 df-dm 4633 df-rn 4634 df-res 4635 df-ima 4636 df-iota 5174 df-fun 5214 df-fn 5215 df-f 5216 df-fv 5220 df-riota 5825 df-ov 5872 df-oprab 5873 df-mpo 5874 df-1st 6135 df-2nd 6136 df-pnf 7984 df-mnf 7985 df-xr 7986 df-ltxr 7987 df-le 7988 df-sub 8120 df-neg 8121 df-reap 8522 df-ap 8529 df-div 8619 df-inn 8909 df-n0 9166 df-z 9243 df-q 9609 df-rp 9641 df-fl 10256 df-mod 10309

This theorem is referenced by: (None)

W3C validator