metakunt29 - Mathbox for metakunt

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Theorem metakunt29 39660

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 39658	. . 3 ⊢ (𝜑 → (𝐵‘(𝐴‘𝑋)) = (𝑋 + (𝑀 − 𝐼)))
10	9	fveq2d 6655	. 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 12970	. . . . . . . . . . . 12 ⊢ (𝑋 ∈ (1...𝑀) → 𝑋 ∈ ℕ)
14	4, 13	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑋 ∈ ℕ)
15		nnre 11666	. . . . . . . . . . 11 ⊢ (𝑋 ∈ ℕ → 𝑋 ∈ ℝ)
16	14, 15	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → 𝑋 ∈ ℝ)
17	1	nnred 11674	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℝ)
18	2	nnred 11674	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐼 ∈ ℝ)
19	17, 18	resubcld 11091	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 − 𝐼) ∈ ℝ)
20	16, 19	readdcld 10693	. . . . . . . . 9 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℝ)
21	16	recnd 10692	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑋 ∈ ℂ)
22	17	recnd 10692	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℂ)
23	18	recnd 10692	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐼 ∈ ℂ)
24	21, 22, 23	addsub12d 11043	. . . . . . . . . 10 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) = (𝑀 + (𝑋 − 𝐼)))
25	22, 23, 21	subsub2d 11049	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑀 − (𝐼 − 𝑋)) = (𝑀 + (𝑋 − 𝐼)))
26	18, 16	resubcld 11091	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐼 − 𝑋) ∈ ℝ)
27	16, 18	posdifd 11250	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑋 < 𝐼 ↔ 0 < (𝐼 − 𝑋)))
28	8, 27	mpbid 235	. . . . . . . . . . . . 13 ⊢ (𝜑 → 0 < (𝐼 − 𝑋))
29	26, 28	elrpd 12454	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐼 − 𝑋) ∈ ℝ⁺)
30	17, 29	ltsubrpd 12489	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑀 − (𝐼 − 𝑋)) < 𝑀)
31	25, 30	eqbrtrrd 5049	. . . . . . . . . 10 ⊢ (𝜑 → (𝑀 + (𝑋 − 𝐼)) < 𝑀)
32	24, 31	eqbrtrd 5047	. . . . . . . . 9 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) < 𝑀)
33	20, 32	ltned 10799	. . . . . . . 8 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ≠ 𝑀)
34	33	adantr 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) ≠ 𝑀)
35		simpr 489	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
36	35	neeq1d 3008	. . . . . . 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 2954	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → ¬ 𝑦 = 𝑀)
39	38	iffalsed 4424	. . . 4 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))) = if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)))
40		simpr 489	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
41	18	adantr 485	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ∈ ℝ)
42	16	adantr 485	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑋 ∈ ℝ)
43	17	adantr 485	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑀 ∈ ℝ)
44	43, 41	resubcld 11091	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑀 − 𝐼) ∈ ℝ)
45	42, 44	readdcld 10693	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) ∈ ℝ)
46	41, 45	lenltd 10809	. . . . . . . . . . . 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 1129	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ¬ (𝑋 + (𝑀 − 𝐼)) < 𝐼)
49		simp2 1135	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
50	49	breq1d 5035	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑦 < 𝐼 ↔ (𝑋 + (𝑀 − 𝐼)) < 𝐼))
51	50	notbid 322	. . . . . . . . . 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 4424	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = (𝑦 + 1))
54	49	oveq1d 7158	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑦 + 1) = ((𝑋 + (𝑀 − 𝐼)) + 1))
55	53, 54	eqtrd 2794	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 1))
56		simp3 1136	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
57	56	iftrued 4421	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 1)
58	57	eqcomd 2765	. . . . . . . . 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 2812	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 1 = 𝐻)
61	60	oveq2d 7159	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → ((𝑋 + (𝑀 − 𝐼)) + 1) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
62	55, 61	eqtrd 2794	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
63	62	3expa 1116	. . . . 5 ⊢ (((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) ∧ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
64	20, 18	ltnled 10810	. . . . . . . . . . . 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 411	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) < 𝐼)
67	66	3adant2 1129	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) < 𝐼)
68		simp2 1135	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = (𝑋 + (𝑀 − 𝐼)))
69	68	breq1d 5035	. . . . . . . . 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 4421	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = 𝑦)
72	21	adantr 485	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝑋 ∈ ℂ)
73	22	adantr 485	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝑀 ∈ ℂ)
74	23	adantr 485	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 𝐼 ∈ ℂ)
75	73, 74	subcld 11020	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑀 − 𝐼) ∈ ℂ)
76	72, 75	addcld 10683	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) ∈ ℂ)
77	76	addid1d 10863	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ((𝑋 + (𝑀 − 𝐼)) + 0) = (𝑋 + (𝑀 − 𝐼)))
78	77	eqcomd 2765	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 0))
79	64	biimpa 481	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼)))
80	79	iffalsed 4424	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 0)
81	80	eqcomd 2765	. . . . . . . . . . . . . . 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 2765	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → if(𝐼 ≤ (𝑋 + (𝑀 − 𝐼)), 1, 0) = 𝐻)
84	81, 83	eqtrd 2794	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → 0 = 𝐻)
85	84	oveq2d 7159	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → ((𝑋 + (𝑀 − 𝐼)) + 0) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
86	78, 85	eqtrd 2794	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑋 + (𝑀 − 𝐼)) < 𝐼) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
87	86	ex 417	. . . . . . . . . . 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 411	. . . . . . . . 9 ⊢ ((𝜑 ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
90	89	3adant2 1129	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → (𝑋 + (𝑀 − 𝐼)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
91	68, 90	eqtrd 2794	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → 𝑦 = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
92	71, 91	eqtrd 2794	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼)) ∧ ¬ 𝐼 ≤ (𝑋 + (𝑀 − 𝐼))) → if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
93	92	3expa 1116	. . . . 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 2794	. . 3 ⊢ ((𝜑 ∧ 𝑦 = (𝑋 + (𝑀 − 𝐼))) → if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
96		1zzd 12037	. . . 4 ⊢ (𝜑 → 1 ∈ ℤ)
97	1	nnzd 12110	. . . 4 ⊢ (𝜑 → 𝑀 ∈ ℤ)
98	14	nnzd 12110	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ ℤ)
99	2	nnzd 12110	. . . . . 6 ⊢ (𝜑 → 𝐼 ∈ ℤ)
100	97, 99	zsubcld 12116	. . . . 5 ⊢ (𝜑 → (𝑀 − 𝐼) ∈ ℤ)
101	98, 100	zaddcld 12115	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℤ)
102		1p0e1 11783	. . . . 5 ⊢ (1 + 0) = 1
103		1red 10665	. . . . . 6 ⊢ (𝜑 → 1 ∈ ℝ)
104		0red 10667	. . . . . 6 ⊢ (𝜑 → 0 ∈ ℝ)
105	14	nnge1d 11707	. . . . . 6 ⊢ (𝜑 → 1 ≤ 𝑋)
106	17, 18	subge0d 11253	. . . . . . 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 11282	. . . . 5 ⊢ (𝜑 → (1 + 0) ≤ (𝑋 + (𝑀 − 𝐼)))
109	102, 108	eqbrtrrid 5061	. . . 4 ⊢ (𝜑 → 1 ≤ (𝑋 + (𝑀 − 𝐼)))
110	20, 17, 32	ltled 10811	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ≤ 𝑀)
111	96, 97, 101, 109, 110	elfzd 12932	. . 3 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ (1...𝑀))
112	111	elfzelzd 12942	. . . 4 ⊢ (𝜑 → (𝑋 + (𝑀 − 𝐼)) ∈ ℤ)
113		0zd 12017	. . . . . 6 ⊢ (𝜑 → 0 ∈ ℤ)
114	96, 113	ifcld 4459	. . . . 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 2835	. . . . 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 12115	. . 3 ⊢ (𝜑 → ((𝑋 + (𝑀 − 𝐼)) + 𝐻) ∈ ℤ)
119	12, 95, 111, 118	fvmptd 6759	. 2 ⊢ (𝜑 → (𝐶‘(𝑋 + (𝑀 − 𝐼))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))
120	10, 119	eqtrd 2794	1 ⊢ (𝜑 → (𝐶‘(𝐵‘(𝐴‘𝑋))) = ((𝑋 + (𝑀 − 𝐼)) + 𝐻))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 400 ∧ w3a 1085 = wceq 1539 ∈ wcel 2112 ≠ wne 2949 ifcif 4413 class class class wbr 5025 ↦ cmpt 5105 ‘cfv 6328 (class class class)co 7143 ℂcc 10558 ℝcr 10559 0cc0 10560 1c1 10561 + caddc 10563 < clt 10698 ≤ cle 10699 − cmin 10893 ℕcn 11659 ℤcz 12005 ...cfz 12924

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1912 ax-6 1971 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2159 ax-12 2176 ax-ext 2730 ax-sep 5162 ax-nul 5169 ax-pow 5227 ax-pr 5291 ax-un 7452 ax-cnex 10616 ax-resscn 10617 ax-1cn 10618 ax-icn 10619 ax-addcl 10620 ax-addrcl 10621 ax-mulcl 10622 ax-mulrcl 10623 ax-mulcom 10624 ax-addass 10625 ax-mulass 10626 ax-distr 10627 ax-i2m1 10628 ax-1ne0 10629 ax-1rid 10630 ax-rnegex 10631 ax-rrecex 10632 ax-cnre 10633 ax-pre-lttri 10634 ax-pre-lttrn 10635 ax-pre-ltadd 10636 ax-pre-mulgt0 10637

This theorem depends on definitions: df-bi 210 df-an 401 df-or 846 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2071 df-mo 2558 df-eu 2589 df-clab 2737 df-cleq 2751 df-clel 2831 df-nfc 2899 df-ne 2950 df-nel 3054 df-ral 3073 df-rex 3074 df-reu 3075 df-rab 3077 df-v 3409 df-sbc 3694 df-csb 3802 df-dif 3857 df-un 3859 df-in 3861 df-ss 3871 df-pss 3873 df-nul 4222 df-if 4414 df-pw 4489 df-sn 4516 df-pr 4518 df-tp 4520 df-op 4522 df-uni 4792 df-iun 4878 df-br 5026 df-opab 5088 df-mpt 5106 df-tr 5132 df-id 5423 df-eprel 5428 df-po 5436 df-so 5437 df-fr 5476 df-we 5478 df-xp 5523 df-rel 5524 df-cnv 5525 df-co 5526 df-dm 5527 df-rn 5528 df-res 5529 df-ima 5530 df-pred 6119 df-ord 6165 df-on 6166 df-lim 6167 df-suc 6168 df-iota 6287 df-fun 6330 df-fn 6331 df-f 6332 df-f1 6333 df-fo 6334 df-f1o 6335 df-fv 6336 df-riota 7101 df-ov 7146 df-oprab 7147 df-mpo 7148 df-om 7573 df-1st 7686 df-2nd 7687 df-wrecs 7950 df-recs 8011 df-rdg 8049 df-er 8292 df-en 8521 df-dom 8522 df-sdom 8523 df-pnf 10700 df-mnf 10701 df-xr 10702 df-ltxr 10703 df-le 10704 df-sub 10895 df-neg 10896 df-nn 11660 df-n0 11920 df-z 12006 df-uz 12268 df-rp 12416 df-fz 12925

This theorem is referenced by: metakunt31 39662

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