Theorem iseqf1olemnab 10444

Description: Lemma for seq3f1o 10460. (Contributed by Jim Kingdon, 27-Aug-2022.)

Hypotheses

Ref	Expression
iseqf1olemqcl.k	⊢ (𝜑 → 𝐾 ∈ (𝑀...𝑁))
iseqf1olemqcl.j	⊢ (𝜑 → 𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁))
iseqf1olemqcl.a	⊢ (𝜑 → 𝐴 ∈ (𝑀...𝑁))
iseqf1olemnab.b	⊢ (𝜑 → 𝐵 ∈ (𝑀...𝑁))
iseqf1olemnab.eq	⊢ (𝜑 → (𝑄‘𝐴) = (𝑄‘𝐵))
iseqf1olemnab.q	⊢ 𝑄 = (𝑢 ∈ (𝑀...𝑁) ↦ if(𝑢 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝑢 = 𝐾, 𝐾, (𝐽‘(𝑢 − 1))), (𝐽‘𝑢)))

Assertion

Ref	Expression
iseqf1olemnab	⊢ (𝜑 → ¬ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))))

Distinct variable groups:   𝑢,𝐴   𝑢,𝐵   𝑢,𝐽   𝑢,𝐾   𝑢,𝑀   𝑢,𝑁

Allowed substitution hints:   𝜑(𝑢)   𝑄(𝑢)

Proof of Theorem iseqf1olemnab

Step	Hyp	Ref	Expression
1		iseqf1olemnab.eq	. . . 4 ⊢ (𝜑 → (𝑄‘𝐴) = (𝑄‘𝐵))
2	1	adantr 274	. . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐴) = (𝑄‘𝐵))
3		iseqf1olemqcl.k	. . . . . . 7 ⊢ (𝜑 → 𝐾 ∈ (𝑀...𝑁))
4		iseqf1olemqcl.j	. . . . . . 7 ⊢ (𝜑 → 𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁))
5		iseqf1olemqcl.a	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ (𝑀...𝑁))
6		iseqf1olemnab.q	. . . . . . 7 ⊢ 𝑄 = (𝑢 ∈ (𝑀...𝑁) ↦ if(𝑢 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝑢 = 𝐾, 𝐾, (𝐽‘(𝑢 − 1))), (𝐽‘𝑢)))
7	3, 4, 5, 6	iseqf1olemqval 10443	. . . . . 6 ⊢ (𝜑 → (𝑄‘𝐴) = if(𝐴 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))), (𝐽‘𝐴)))
8	7	adantr 274	. . . . 5 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐴) = if(𝐴 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))), (𝐽‘𝐴)))
9		simprl 526	. . . . . 6 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → 𝐴 ∈ (𝐾...(◡𝐽‘𝐾)))
10	9	iftrued 3533	. . . . 5 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → if(𝐴 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))), (𝐽‘𝐴)) = if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))))
11	8, 10	eqtrd 2203	. . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐴) = if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))))
12		f1ocnvfv2 5757	. . . . . . . 8 ⊢ ((𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → (𝐽‘(◡𝐽‘𝐾)) = 𝐾)
13	4, 3, 12	syl2anc 409	. . . . . . 7 ⊢ (𝜑 → (𝐽‘(◡𝐽‘𝐾)) = 𝐾)
14	13	ad2antrr 485	. . . . . 6 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → (𝐽‘(◡𝐽‘𝐾)) = 𝐾)
15		f1ofn 5443	. . . . . . . . 9 ⊢ (𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁) → 𝐽 Fn (𝑀...𝑁))
16	4, 15	syl 14	. . . . . . . 8 ⊢ (𝜑 → 𝐽 Fn (𝑀...𝑁))
17	16	ad2antrr 485	. . . . . . 7 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → 𝐽 Fn (𝑀...𝑁))
18		elfzuz 9977	. . . . . . . . . 10 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ (ℤ≥‘𝑀))
19		fzss1 10019	. . . . . . . . . 10 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...(◡𝐽‘𝐾)))
20	3, 18, 19	3syl 17	. . . . . . . . 9 ⊢ (𝜑 → (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...(◡𝐽‘𝐾)))
21		f1ocnv 5455	. . . . . . . . . . . 12 ⊢ (𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁) → ◡𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁))
22		f1of 5442	. . . . . . . . . . . 12 ⊢ (◡𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁) → ◡𝐽:(𝑀...𝑁)⟶(𝑀...𝑁))
23	4, 21, 22	3syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → ◡𝐽:(𝑀...𝑁)⟶(𝑀...𝑁))
24	23, 3	ffvelrnd 5632	. . . . . . . . . 10 ⊢ (𝜑 → (◡𝐽‘𝐾) ∈ (𝑀...𝑁))
25		elfzuz3 9978	. . . . . . . . . 10 ⊢ ((◡𝐽‘𝐾) ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘(◡𝐽‘𝐾)))
26		fzss2 10020	. . . . . . . . . 10 ⊢ (𝑁 ∈ (ℤ≥‘(◡𝐽‘𝐾)) → (𝑀...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁))
27	24, 25, 26	3syl 17	. . . . . . . . 9 ⊢ (𝜑 → (𝑀...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁))
28	20, 27	sstrd 3157	. . . . . . . 8 ⊢ (𝜑 → (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁))
29	28	ad2antrr 485	. . . . . . 7 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁))
30		elfzubelfz 9992	. . . . . . . . 9 ⊢ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) → (◡𝐽‘𝐾) ∈ (𝐾...(◡𝐽‘𝐾)))
31	30	adantr 274	. . . . . . . 8 ⊢ ((𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))) → (◡𝐽‘𝐾) ∈ (𝐾...(◡𝐽‘𝐾)))
32	31	ad2antlr 486	. . . . . . 7 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → (◡𝐽‘𝐾) ∈ (𝐾...(◡𝐽‘𝐾)))
33		fnfvima 5730	. . . . . . 7 ⊢ ((𝐽 Fn (𝑀...𝑁) ∧ (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁) ∧ (◡𝐽‘𝐾) ∈ (𝐾...(◡𝐽‘𝐾))) → (𝐽‘(◡𝐽‘𝐾)) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
34	17, 29, 32, 33	syl3anc 1233	. . . . . 6 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → (𝐽‘(◡𝐽‘𝐾)) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
35	14, 34	eqeltrrd 2248	. . . . 5 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ 𝐴 = 𝐾) → 𝐾 ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
36	16	ad2antrr 485	. . . . . 6 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐽 Fn (𝑀...𝑁))
37	28	ad2antrr 485	. . . . . 6 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁))
38	3	adantr 274	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → 𝐾 ∈ (𝑀...𝑁))
39		elfzelz 9981	. . . . . . . . . 10 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ ℤ)
40	38, 39	syl 14	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → 𝐾 ∈ ℤ)
41	40	adantr 274	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐾 ∈ ℤ)
42	24	ad2antrr 485	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (◡𝐽‘𝐾) ∈ (𝑀...𝑁))
43		elfzelz 9981	. . . . . . . . 9 ⊢ ((◡𝐽‘𝐾) ∈ (𝑀...𝑁) → (◡𝐽‘𝐾) ∈ ℤ)
44	42, 43	syl 14	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (◡𝐽‘𝐾) ∈ ℤ)
45	5	adantr 274	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → 𝐴 ∈ (𝑀...𝑁))
46		elfzelz 9981	. . . . . . . . . . 11 ⊢ (𝐴 ∈ (𝑀...𝑁) → 𝐴 ∈ ℤ)
47	45, 46	syl 14	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → 𝐴 ∈ ℤ)
48	47	adantr 274	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐴 ∈ ℤ)
49		peano2zm 9250	. . . . . . . . 9 ⊢ (𝐴 ∈ ℤ → (𝐴 − 1) ∈ ℤ)
50	48, 49	syl 14	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐴 − 1) ∈ ℤ)
51	41, 44, 50	3jca 1172	. . . . . . 7 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾 ∈ ℤ ∧ (◡𝐽‘𝐾) ∈ ℤ ∧ (𝐴 − 1) ∈ ℤ))
52		simpr 109	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → ¬ 𝐴 = 𝐾)
53		eqcom 2172	. . . . . . . . . . 11 ⊢ (𝐴 = 𝐾 ↔ 𝐾 = 𝐴)
54	52, 53	sylnib 671	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → ¬ 𝐾 = 𝐴)
55	9	adantr 274	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐴 ∈ (𝐾...(◡𝐽‘𝐾)))
56		elfzle1 9983	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) → 𝐾 ≤ 𝐴)
57	55, 56	syl 14	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐾 ≤ 𝐴)
58		zleloe 9259	. . . . . . . . . . . 12 ⊢ ((𝐾 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐾 ≤ 𝐴 ↔ (𝐾 < 𝐴 ∨ 𝐾 = 𝐴)))
59	41, 48, 58	syl2anc 409	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾 ≤ 𝐴 ↔ (𝐾 < 𝐴 ∨ 𝐾 = 𝐴)))
60	57, 59	mpbid 146	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾 < 𝐴 ∨ 𝐾 = 𝐴))
61	54, 60	ecased 1344	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐾 < 𝐴)
62		zltlem1 9269	. . . . . . . . . 10 ⊢ ((𝐾 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐾 < 𝐴 ↔ 𝐾 ≤ (𝐴 − 1)))
63	41, 48, 62	syl2anc 409	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾 < 𝐴 ↔ 𝐾 ≤ (𝐴 − 1)))
64	61, 63	mpbid 146	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐾 ≤ (𝐴 − 1))
65	50	zred 9334	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐴 − 1) ∈ ℝ)
66	48	zred 9334	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐴 ∈ ℝ)
67	44	zred 9334	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (◡𝐽‘𝐾) ∈ ℝ)
68	66	lem1d 8849	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐴 − 1) ≤ 𝐴)
69		elfzle2 9984	. . . . . . . . . 10 ⊢ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) → 𝐴 ≤ (◡𝐽‘𝐾))
70	55, 69	syl 14	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → 𝐴 ≤ (◡𝐽‘𝐾))
71	65, 66, 67, 68, 70	letrd 8043	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐴 − 1) ≤ (◡𝐽‘𝐾))
72	64, 71	jca 304	. . . . . . 7 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐾 ≤ (𝐴 − 1) ∧ (𝐴 − 1) ≤ (◡𝐽‘𝐾)))
73		elfz2 9972	. . . . . . 7 ⊢ ((𝐴 − 1) ∈ (𝐾...(◡𝐽‘𝐾)) ↔ ((𝐾 ∈ ℤ ∧ (◡𝐽‘𝐾) ∈ ℤ ∧ (𝐴 − 1) ∈ ℤ) ∧ (𝐾 ≤ (𝐴 − 1) ∧ (𝐴 − 1) ≤ (◡𝐽‘𝐾))))
74	51, 72, 73	sylanbrc 415	. . . . . 6 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐴 − 1) ∈ (𝐾...(◡𝐽‘𝐾)))
75		fnfvima 5730	. . . . . 6 ⊢ ((𝐽 Fn (𝑀...𝑁) ∧ (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁) ∧ (𝐴 − 1) ∈ (𝐾...(◡𝐽‘𝐾))) → (𝐽‘(𝐴 − 1)) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
76	36, 37, 74, 75	syl3anc 1233	. . . . 5 ⊢ (((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) ∧ ¬ 𝐴 = 𝐾) → (𝐽‘(𝐴 − 1)) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
77		zdceq 9287	. . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝐾 ∈ ℤ) → DECID 𝐴 = 𝐾)
78	47, 40, 77	syl2anc 409	. . . . 5 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → DECID 𝐴 = 𝐾)
79	35, 76, 78	ifcldadc 3555	. . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → if(𝐴 = 𝐾, 𝐾, (𝐽‘(𝐴 − 1))) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
80	11, 79	eqeltrd 2247	. . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐴) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
81	2, 80	eqeltrrd 2248	. 2 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
82		iseqf1olemnab.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ (𝑀...𝑁))
83	3, 4, 82, 6	iseqf1olemqval 10443	. . . . 5 ⊢ (𝜑 → (𝑄‘𝐵) = if(𝐵 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐵 = 𝐾, 𝐾, (𝐽‘(𝐵 − 1))), (𝐽‘𝐵)))
84	83	adantr 274	. . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐵) = if(𝐵 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐵 = 𝐾, 𝐾, (𝐽‘(𝐵 − 1))), (𝐽‘𝐵)))
85		simprr 527	. . . . 5 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))
86	85	iffalsed 3536	. . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → if(𝐵 ∈ (𝐾...(◡𝐽‘𝐾)), if(𝐵 = 𝐾, 𝐾, (𝐽‘(𝐵 − 1))), (𝐽‘𝐵)) = (𝐽‘𝐵))
87	84, 86	eqtrd 2203	. . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → (𝑄‘𝐵) = (𝐽‘𝐵))
88		f1of1 5441	. . . . . . 7 ⊢ (𝐽:(𝑀...𝑁)–1-1-onto→(𝑀...𝑁) → 𝐽:(𝑀...𝑁)–1-1→(𝑀...𝑁))
89	4, 88	syl 14	. . . . . 6 ⊢ (𝜑 → 𝐽:(𝑀...𝑁)–1-1→(𝑀...𝑁))
90		f1elima 5752	. . . . . 6 ⊢ ((𝐽:(𝑀...𝑁)–1-1→(𝑀...𝑁) ∧ 𝐵 ∈ (𝑀...𝑁) ∧ (𝐾...(◡𝐽‘𝐾)) ⊆ (𝑀...𝑁)) → ((𝐽‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))) ↔ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))))
91	89, 82, 28, 90	syl3anc 1233	. . . . 5 ⊢ (𝜑 → ((𝐽‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))) ↔ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))))
92	91	adantr 274	. . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → ((𝐽‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))) ↔ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))))
93	85, 92	mtbird 668	. . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → ¬ (𝐽‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
94	87, 93	eqneltrd 2266	. 2 ⊢ ((𝜑 ∧ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾)))) → ¬ (𝑄‘𝐵) ∈ (𝐽 “ (𝐾...(◡𝐽‘𝐾))))
95	81, 94	pm2.65da 656	1 ⊢ (𝜑 → ¬ (𝐴 ∈ (𝐾...(◡𝐽‘𝐾)) ∧ ¬ 𝐵 ∈ (𝐾...(◡𝐽‘𝐾))))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 103   ↔ wb 104   ∨ wo 703  DECID wdc 829   ∧ w3a 973   = wceq 1348   ∈ wcel 2141   ⊆ wss 3121  ifcif 3526   class class class wbr 3989   ↦ cmpt 4050  ^◡ccnv 4610   “ cima 4614   Fn wfn 5193  ⟶wf 5194  –1-1→wf1 5195  –1-1-onto→wf1o 5197  ‘cfv 5198  (class class class)co 5853  1c1 7775   < clt 7954   ≤ cle 7955   − cmin 8090  ℤcz 9212  ℤ_≥cuz 9487  ...cfz 9965

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194  ax-un 4418  ax-setind 4521  ax-cnex 7865  ax-resscn 7866  ax-1cn 7867  ax-1re 7868  ax-icn 7869  ax-addcl 7870  ax-addrcl 7871  ax-mulcl 7872  ax-addcom 7874  ax-addass 7876  ax-distr 7878  ax-i2m1 7879  ax-0lt1 7880  ax-0id 7882  ax-rnegex 7883  ax-cnre 7885  ax-pre-ltirr 7886  ax-pre-ltwlin 7887  ax-pre-lttrn 7888  ax-pre-ltadd 7890

This theorem depends on definitions:  df-bi 116  df-dc 830  df-3or 974  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-nel 2436  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-if 3527  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-int 3832  df-br 3990  df-opab 4051  df-mpt 4052  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-rn 4622  df-res 4623  df-ima 4624  df-iota 5160  df-fun 5200  df-fn 5201  df-f 5202  df-f1 5203  df-fo 5204  df-f1o 5205  df-fv 5206  df-riota 5809  df-ov 5856  df-oprab 5857  df-mpo 5858  df-pnf 7956  df-mnf 7957  df-xr 7958  df-ltxr 7959  df-le 7960  df-sub 8092  df-neg 8093  df-inn 8879  df-n0 9136  df-z 9213  df-uz 9488  df-fz 9966

This theorem is referenced by:  iseqf1olemmo  10448