metakunt29 - Mathbox for metakunt

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Theorem metakunt29 39827

Description: Construction of one solution of the increment equation system. (Contributed by metakunt, 7-Jul-2024.)

**Hypotheses**
Ref	Expression
metakunt29.1	⊢ (𝜑 → 𝑀 ∈ ℕ)
metakunt29.2	⊢ (𝜑 → 𝐼 ∈ ℕ)
metakunt29.3	⊢ (𝜑 → 𝐼 ≤ 𝑀)
metakunt29.4	⊢ (𝜑 → 𝑋 ∈ (1...𝑀))
metakunt29.5	⊢ 𝐴 = (𝑥 ∈ (1...𝑀) ↦ if(𝑥 = 𝐼, 𝑀, if(𝑥 < 𝐼, 𝑥, (𝑥 − 1))))
metakunt29.6	⊢ 𝐵 = (𝑧 ∈ (1...𝑀) ↦ if(𝑧 = 𝑀, 𝑀, if(𝑧 < 𝐼, (𝑧 + (𝑀 − 𝐼)), (𝑧 + (1 − 𝐼)))))
metakunt29.7	⊢ (𝜑 → ¬ 𝑋 = 𝐼)
metakunt29.8	⊢ (𝜑 → 𝑋 < 𝐼)
metakunt29.9	⊢ 𝐶 = (𝑦 ∈ (1...𝑀) ↦ if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))))
metakunt29.10	⊢ 𝐻 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0)

**Assertion**
Ref	Expression
metakunt29	⊢ (𝜑 → (𝐶‘(𝐵‘(𝐴‘𝑋))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))

Distinct variable groups: 𝑦,𝐻 𝑦,𝐼 𝑧,𝐼 𝑥,𝑀 𝑦,𝑀 𝑧,𝑀 𝑥,𝑋 𝑦,𝑋 𝑧,𝑋 𝜑,𝑥 𝜑,𝑦 𝜑,𝑧 Allowed substitution hints: 𝐴(𝑥,𝑦,𝑧) 𝐵(𝑥,𝑦,𝑧) 𝐶(𝑥,𝑦,𝑧) 𝐻(𝑥,𝑧) 𝐼(𝑥)

**Proof of Theorem metakunt29**
Step	Hyp	Ref	Expression
1		metakunt29.1	. . . 4 ⊢ (𝜑 → 𝑀 ∈ ℕ)
2		metakunt29.2	. . . 4 ⊢ (𝜑 → 𝐼 ∈ ℕ)
3		metakunt29.3	. . . 4 ⊢ (𝜑 → 𝐼 ≤ 𝑀)
4		metakunt29.4	. . . 4 ⊢ (𝜑 → 𝑋 ∈ (1...𝑀))
5		metakunt29.5	. . . 4 ⊢ 𝐴 = (𝑥 ∈ (1...𝑀) ↦ if(𝑥 = 𝐼, 𝑀, if(𝑥 < 𝐼, 𝑥, (𝑥 − 1))))
6		metakunt29.6	. . . 4 ⊢ 𝐵 = (𝑧 ∈ (1...𝑀) ↦ if(𝑧 = 𝑀, 𝑀, if(𝑧 < 𝐼, (𝑧 + (𝑀 − 𝐼)), (𝑧 + (1 − 𝐼)))))
7		metakunt29.7	. . . 4 ⊢ (𝜑 → ¬ 𝑋 = 𝐼)
8		metakunt29.8	. . . 4 ⊢ (𝜑 → 𝑋 < 𝐼)
9	1, 2, 3, 4, 5, 6, 7, 8	metakunt27 39825	. . 3 ⊢ (𝜑 → (𝐵‘(𝐴‘𝑋)) = (𝑋 + (𝑀 − 𝐼)))
10	9	fveq2d 6710	. 2 ⊢ (𝜑 → (𝐶‘(𝐵‘(𝐴‘𝑋))) = (𝐶‘(𝑋 + (𝑀 − 𝐼))))
11		metakunt29.9	. . . 4 ⊢ 𝐶 = (𝑦 ∈ (1...𝑀) ↦ if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))))
12	11	a1i 11	. . 3 ⊢ (𝜑 → 𝐶 = (𝑦 ∈ (1...𝑀) ↦ if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)))))
13		elfznn 13124	. . . . . . . . . . . 12 ⊢ (𝑋 ∈ (1...𝑀) → 𝑋 ∈ ℕ)
14	4, 13	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑋 ∈ ℕ)
15		nnre 11820	. . . . . . . . . . 11 ⊢ (𝑋 ∈ ℕ → 𝑋 ∈ ℝ)
16	14, 15	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → 𝑋 ∈ ℝ)
17	1	nnred 11828	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℝ)
18	2	nnred 11828	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐼 ∈ ℝ)
19	17, 18	resubcld 11243	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 − 𝐼) ∈ ℝ)
20	16, 19	readdcld 10845	. . . . . . . . 9 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℝ)
21	16	recnd 10844	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑋 ∈ ℂ)
22	17	recnd 10844	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℂ)
23	18	recnd 10844	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐼 ∈ ℂ)
24	21, 22, 23	addsub12d 11195	. . . . . . . . . 10 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) = (𝑀 + (𝑋 − 𝐼)))
25	22, 23, 21	subsub2d 11201	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑀 − (𝐼 − 𝑋)) = (𝑀 + (𝑋 − 𝐼)))
26	18, 16	resubcld 11243	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐼 − 𝑋) ∈ ℝ)
27	16, 18	posdifd 11402	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑋 < 𝐼 ↔ 0 < (𝐼 − 𝑋)))
28	8, 27	mpbid 235	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 < (𝐼 − 𝑋))
29	26, 28	elrpd 12608	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐼 − 𝑋) ∈ ℝ⁺)
30	17, 29	ltsubrpd 12643	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑀 − (𝐼 − 𝑋)) < 𝑀)
31	25, 30	eqbrtrrd 5067	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 + (𝑋 − 𝐼)) < 𝑀)
32	24, 31	eqbrtrd 5065	. . . . . . . . 9 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) < 𝑀)
33	20, 32	ltned 10951	. . . . . . . 8 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ≠ 𝑀)
34	33	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) ≠ 𝑀)
35		simpr 488	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
36	35	neeq1d 2994	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → (𝑦 ≠ 𝑀 ↔ (𝑋 + (𝑀 − 𝐼)) ≠ 𝑀))
37	34, 36	mpbird 260	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → 𝑦 ≠ 𝑀)
38	37	neneqd 2940	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → ¬ 𝑦 = 𝑀)
39	38	iffalsed 4440	. . . 4 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))) = if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)))
40		simpr 488	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
41	18	adantr 484	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ∈ ℝ)
42	16	adantr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑋 ∈ ℝ)
43	17	adantr 484	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑀 ∈ ℝ)
44	43, 41	resubcld 11243	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑀 − 𝐼) ∈ ℝ)
45	42, 44	readdcld 10845	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) ∈ ℝ)
46	41, 45	lenltd 10961	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝐼 ≤ (𝑋 + (𝑀 − 𝐼)) ↔ ¬ (𝑋 + (𝑀 − 𝐼)) < 𝐼))
47	40, 46	mpbid 235	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ¬ (𝑋 + (𝑀 − 𝐼)) < 𝐼)
48	47	3adant2 1133	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ¬ (𝑋 + (𝑀 − 𝐼)) < 𝐼)
49		simp2 1139	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
50	49	breq1d 5053	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑦 < 𝐼 ↔ (𝑋 + (𝑀 − 𝐼)) < 𝐼))
51	50	notbid 321	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (¬ 𝑦 < 𝐼 ↔ ¬ (𝑋 + (𝑀 − 𝐼)) < 𝐼))
52	48, 51	mpbird 260	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ¬ 𝑦 < 𝐼)
53	52	iffalsed 4440	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = (𝑦 + 1))
54	49	oveq1d 7217	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑦 + 1) = ((𝑋 + (𝑀 − 𝐼)) + 1))
55	53, 54	eqtrd 2774	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 1))
56		simp3 1140	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
57	56	iftrued 4437	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 1)
58	57	eqcomd 2740	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 1 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0))
59		metakunt29.10	. . . . . . . . 9 ⊢ 𝐻 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0)
60	58, 59	eqtr4di 2792	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 1 = 𝐻)
61	60	oveq2d 7218	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ((𝑋 + (𝑀 − 𝐼)) + 1) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
62	55, 61	eqtrd 2774	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
63	62	3expa 1120	. . . . 5 ⊢ (((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
64	20, 18	ltnled 10962	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑋 + (𝑀 − 𝐼)) < 𝐼 ↔ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))))
65	64	biimprd 251	. . . . . . . . . . 11 ⊢ (𝜑 → (¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)) → (𝑋 + (𝑀 − 𝐼)) < 𝐼))
66	65	imp 410	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) < 𝐼)
67	66	3adant2 1133	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) < 𝐼)
68		simp2 1139	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
69	68	breq1d 5053	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑦 < 𝐼 ↔ (𝑋 + (𝑀 − 𝐼)) < 𝐼))
70	67, 69	mpbird 260	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 < 𝐼)
71	70	iftrued 4437	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = 𝑦)
72	21	adantr 484	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝑋 ∈ ℂ)
73	22	adantr 484	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝑀 ∈ ℂ)
74	23	adantr 484	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝐼 ∈ ℂ)
75	73, 74	subcld 11172	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑀 − 𝐼) ∈ ℂ)
76	72, 75	addcld 10835	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) ∈ ℂ)
77	76	addid1d 11015	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ((𝑋 + (𝑀 − 𝐼)) + 0) = (𝑋 + (𝑀 − 𝐼)))
78	77	eqcomd 2740	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 0))
79	64	biimpa 480	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
80	79	iffalsed 4440	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 0)
81	80	eqcomd 2740	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 0 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0))
82	59	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝐻 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0))
83	82	eqcomd 2740	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 𝐻)
84	81, 83	eqtrd 2774	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 0 = 𝐻)
85	84	oveq2d 7218	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ((𝑋 + (𝑀 − 𝐼)) + 0) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
86	78, 85	eqtrd 2774	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
87	86	ex 416	. . . . . . . . . . 11 ⊢ (𝜑 → ((𝑋 + (𝑀 − 𝐼)) < 𝐼 → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻)))
88	65, 87	syld 47	. . . . . . . . . 10 ⊢ (𝜑 → (¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻)))
89	88	imp 410	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
90	89	3adant2 1133	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
91	68, 90	eqtrd 2774	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
92	71, 91	eqtrd 2774	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
93	92	3expa 1120	. . . . 5 ⊢ (((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
94	63, 93	pm2.61dan 813	. . . 4 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
95	39, 94	eqtrd 2774	. . 3 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
96		1zzd 12191	. . . 4 ⊢ (𝜑 → 1 ∈ ℤ)
97	1	nnzd 12264	. . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ)
98	14	nnzd 12264	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ ℤ)
99	2	nnzd 12264	. . . . . 6 ⊢ (𝜑 → 𝐼 ∈ ℤ)
100	97, 99	zsubcld 12270	. . . . 5 ⊢ (𝜑 → (𝑀 − 𝐼) ∈ ℤ)
101	98, 100	zaddcld 12269	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℤ)
102		1p0e1 11937	. . . . 5 ⊢ (1 + 0) = 1
103		1red 10817	. . . . . 6 ⊢ (𝜑 → 1 ∈ ℝ)
104		0red 10819	. . . . . 6 ⊢ (𝜑 → 0 ∈ ℝ)
105	14	nnge1d 11861	. . . . . 6 ⊢ (𝜑 → 1 ≤ 𝑋)
106	17, 18	subge0d 11405	. . . . . . 7 ⊢ (𝜑 → (0 ≤ (𝑀 − 𝐼) ↔ 𝐼 ≤ 𝑀))
107	3, 106	mpbird 260	. . . . . 6 ⊢ (𝜑 → 0 ≤ (𝑀 − 𝐼))
108	103, 104, 16, 19, 105, 107	le2addd 11434	. . . . 5 ⊢ (𝜑 → (1 + 0) ≤ (𝑋 + (𝑀 − 𝐼)))
109	102, 108	eqbrtrrid 5079	. . . 4 ⊢ (𝜑 → 1 ≤ (𝑋 + (𝑀 − 𝐼)))
110	20, 17, 32	ltled 10963	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ≤ 𝑀)
111	96, 97, 101, 109, 110	elfzd 13086	. . 3 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ (1...𝑀))
112	111	elfzelzd 13096	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℤ)
113		0zd 12171	. . . . . 6 ⊢ (𝜑 → 0 ∈ ℤ)
114	96, 113	ifcld 4475	. . . . 5 ⊢ (𝜑 → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) ∈ ℤ)
115	59	a1i 11	. . . . . 6 ⊢ (𝜑 → 𝐻 = if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0))
116	115	eleq1d 2818	. . . . 5 ⊢ (𝜑 → (𝐻 ∈ ℤ ↔ if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) ∈ ℤ))
117	114, 116	mpbird 260	. . . 4 ⊢ (𝜑 → 𝐻 ∈ ℤ)
118	112, 117	zaddcld 12269	. . 3 ⊢ (𝜑 → ((𝑋 + (𝑀 − 𝐼)) + 𝐻) ∈ ℤ)
119	12, 95, 111, 118	fvmptd 6814	. 2 ⊢ (𝜑 → (𝐶‘(𝑋 + (𝑀 − 𝐼))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
120	10, 119	eqtrd 2774	1 ⊢ (𝜑 → (𝐶‘(𝐵‘(𝐴‘𝑋))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 ∧ w3a 1089 = wceq 1543 ∈ wcel 2110 ≠ wne 2935 ifcif 4429 class class class wbr 5043 ↦ cmpt 5124 ‘cfv 6369 (class class class)co 7202 ℂcc 10710 ℝcr 10711 0cc0 10712 1c1 10713 + caddc 10715 < clt 10850 ≤ cle 10851 − cmin 11045 ℕcn 11813 ℤcz 12159 ...cfz 13078

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2706 ax-sep 5181 ax-nul 5188 ax-pow 5247 ax-pr 5311 ax-un 7512 ax-cnex 10768 ax-resscn 10769 ax-1cn 10770 ax-icn 10771 ax-addcl 10772 ax-addrcl 10773 ax-mulcl 10774 ax-mulrcl 10775 ax-mulcom 10776 ax-addass 10777 ax-mulass 10778 ax-distr 10779 ax-i2m1 10780 ax-1ne0 10781 ax-1rid 10782 ax-rnegex 10783 ax-rrecex 10784 ax-cnre 10785 ax-pre-lttri 10786 ax-pre-lttrn 10787 ax-pre-ltadd 10788 ax-pre-mulgt0 10789

This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2537 df-eu 2566 df-clab 2713 df-cleq 2726 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rab 3063 df-v 3403 df-sbc 3688 df-csb 3803 df-dif 3860 df-un 3862 df-in 3864 df-ss 3874 df-pss 3876 df-nul 4228 df-if 4430 df-pw 4505 df-sn 4532 df-pr 4534 df-tp 4536 df-op 4538 df-uni 4810 df-iun 4896 df-br 5044 df-opab 5106 df-mpt 5125 df-tr 5151 df-id 5444 df-eprel 5449 df-po 5457 df-so 5458 df-fr 5498 df-we 5500 df-xp 5546 df-rel 5547 df-cnv 5548 df-co 5549 df-dm 5550 df-rn 5551 df-res 5552 df-ima 5553 df-pred 6149 df-ord 6205 df-on 6206 df-lim 6207 df-suc 6208 df-iota 6327 df-fun 6371 df-fn 6372 df-f 6373 df-f1 6374 df-fo 6375 df-f1o 6376 df-fv 6377 df-riota 7159 df-ov 7205 df-oprab 7206 df-mpo 7207 df-om 7634 df-1st 7750 df-2nd 7751 df-wrecs 8036 df-recs 8097 df-rdg 8135 df-er 8380 df-en 8616 df-dom 8617 df-sdom 8618 df-pnf 10852 df-mnf 10853 df-xr 10854 df-ltxr 10855 df-le 10856 df-sub 11047 df-neg 11048 df-nn 11814 df-n0 12074 df-z 12160 df-uz 12422 df-rp 12570 df-fz 13079

This theorem is referenced by: metakunt31 39829

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