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Theorem imasleval 17489

Description: The value of the image structure's ordering when the order is compatible with the mapping function. (Contributed by Mario Carneiro, 24-Feb-2015.)

**Hypotheses**
Ref	Expression
imasless.u	⊢ (𝜑 → 𝑈 = (𝐹 “_s 𝑅))
imasless.v	⊢ (𝜑 → 𝑉 = (Base‘𝑅))
imasless.f	⊢ (𝜑 → 𝐹:𝑉–onto→𝐵)
imasless.r	⊢ (𝜑 → 𝑅 ∈ 𝑍)
imasless.l	⊢ ≤ = (le‘𝑈)
imasleval.n	⊢ 𝑁 = (le‘𝑅)
imasleval.e	⊢ ((𝜑 ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉) ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))

**Assertion**
Ref	Expression
imasleval	⊢ ((𝜑 ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌))

Distinct variable groups: 𝑐,𝑑, ≤ 𝑎,𝑏,𝑐,𝑑,𝐹 𝑁,𝑎,𝑏,𝑐,𝑑 𝑉,𝑎,𝑏,𝑐,𝑑 𝑌,𝑑 𝜑,𝑎,𝑏,𝑐,𝑑 𝑋,𝑐,𝑑 Allowed substitution hints: 𝐵(𝑎,𝑏,𝑐,𝑑) 𝑅(𝑎,𝑏,𝑐,𝑑) 𝑈(𝑎,𝑏,𝑐,𝑑) ≤ (𝑎,𝑏) 𝑋(𝑎,𝑏) 𝑌(𝑎,𝑏,𝑐) 𝑍(𝑎,𝑏,𝑐,𝑑)

**Proof of Theorem imasleval**
Step	Hyp	Ref	Expression
1		fveq2 6891	. . . . . . 7 ⊢ (𝑐 = 𝑋 → (𝐹‘𝑐) = (𝐹‘𝑋))
2	1	breq1d 5158	. . . . . 6 ⊢ (𝑐 = 𝑋 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑑)))
3		breq1 5151	. . . . . 6 ⊢ (𝑐 = 𝑋 → (𝑐𝑁𝑑 ↔ 𝑋𝑁𝑑))
4	2, 3	bibi12d 345	. . . . 5 ⊢ (𝑐 = 𝑋 → (((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑) ↔ ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑)))
5	4	imbi2d 340	. . . 4 ⊢ (𝑐 = 𝑋 → ((𝜑 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑)) ↔ (𝜑 → ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑))))
6		fveq2 6891	. . . . . . 7 ⊢ (𝑑 = 𝑌 → (𝐹‘𝑑) = (𝐹‘𝑌))
7	6	breq2d 5160	. . . . . 6 ⊢ (𝑑 = 𝑌 → ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑌)))
8		breq2 5152	. . . . . 6 ⊢ (𝑑 = 𝑌 → (𝑋𝑁𝑑 ↔ 𝑋𝑁𝑌))
9	7, 8	bibi12d 345	. . . . 5 ⊢ (𝑑 = 𝑌 → (((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑) ↔ ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌)))
10	9	imbi2d 340	. . . 4 ⊢ (𝑑 = 𝑌 → ((𝜑 → ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑)) ↔ (𝜑 → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌))))
11		imasless.f	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐹:𝑉–onto→𝐵)
12		fofn 6807	. . . . . . . . . . . 12 ⊢ (𝐹:𝑉–onto→𝐵 → 𝐹 Fn 𝑉)
13	11, 12	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹 Fn 𝑉)
14	13	adantr 481	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝐹 Fn 𝑉)
15	14	fndmd 6654	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → dom 𝐹 = 𝑉)
16	15	rexeqdv 3326	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (∃𝑎 ∈ dom 𝐹(𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ∃𝑎 ∈ 𝑉 (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
17		fnbrfvb 6944	. . . . . . . . . . . 12 ⊢ ((𝐹 Fn 𝑉 ∧ 𝑎 ∈ 𝑉) → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ 𝑎𝐹(𝐹‘𝑐)))
18	14, 17	sylan 580	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ 𝑎𝐹(𝐹‘𝑐)))
19	18	anbi1d 630	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
20		ancom 461	. . . . . . . . . . . . . . 15 ⊢ ((𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏))
21		vex 3478	. . . . . . . . . . . . . . . . . 18 ⊢ 𝑏 ∈ V
22		fvex 6904	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐹‘𝑑) ∈ V
23	21, 22	breldm 5908	. . . . . . . . . . . . . . . . 17 ⊢ (𝑏𝐹(𝐹‘𝑑) → 𝑏 ∈ dom 𝐹)
24	23	adantr 481	. . . . . . . . . . . . . . . 16 ⊢ ((𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) → 𝑏 ∈ dom 𝐹)
25	24	pm4.71ri 561	. . . . . . . . . . . . . . 15 ⊢ ((𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ (𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
26	20, 25	bitri 274	. . . . . . . . . . . . . 14 ⊢ ((𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ (𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
27	26	exbii 1850	. . . . . . . . . . . . 13 ⊢ (∃𝑏(𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ ∃𝑏(𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
28		vex 3478	. . . . . . . . . . . . . 14 ⊢ 𝑎 ∈ V
29	28, 22	brco 5870	. . . . . . . . . . . . 13 ⊢ (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ ∃𝑏(𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)))
30		df-rex 3071	. . . . . . . . . . . . 13 ⊢ (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏(𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
31	27, 29, 30	3bitr4i 302	. . . . . . . . . . . 12 ⊢ (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ ∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏))
32	14	ad2antrr 724	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → 𝐹 Fn 𝑉)
33		fnbrfvb 6944	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn 𝑉 ∧ 𝑏 ∈ 𝑉) → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ 𝑏𝐹(𝐹‘𝑑)))
34	32, 33	sylan 580	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ 𝑏 ∈ 𝑉) → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ 𝑏𝐹(𝐹‘𝑑)))
35	34	anbi1d 630	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ 𝑏 ∈ 𝑉) → (((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
36		imasleval.e	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉) ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
37	36	3expa 1118	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝜑 ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉)) ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
38	37	an32s 650	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
39	38	anassrs 468	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ 𝑏 ∈ 𝑉) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
40	39	impl 456	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ 𝑏 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑))
41	40	pm5.32da 579	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ 𝑏 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
42	41	an32s 650	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ 𝑏 ∈ 𝑉) → (((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
43	35, 42	bitr3d 280	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ 𝑏 ∈ 𝑉) → ((𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
44	43	rexbidva 3176	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (∃𝑏 ∈ 𝑉 (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏 ∈ 𝑉 ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
45		r19.41v 3188	. . . . . . . . . . . . . 14 ⊢ (∃𝑏 ∈ 𝑉 ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑) ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑))
46	44, 45	bitrdi 286	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (∃𝑏 ∈ 𝑉 (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
47	15	rexeqdv 3326	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏 ∈ 𝑉 (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
48	47	ad2antrr 724	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏 ∈ 𝑉 (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
49		simprr 771	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝑑 ∈ 𝑉)
50		eqid 2732	. . . . . . . . . . . . . . . 16 ⊢ (𝐹‘𝑑) = (𝐹‘𝑑)
51		fveqeq2 6900	. . . . . . . . . . . . . . . . 17 ⊢ (𝑏 = 𝑑 → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ (𝐹‘𝑑) = (𝐹‘𝑑)))
52	51	rspcev 3612	. . . . . . . . . . . . . . . 16 ⊢ ((𝑑 ∈ 𝑉 ∧ (𝐹‘𝑑) = (𝐹‘𝑑)) → ∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑))
53	49, 50, 52	sylancl 586	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑))
54	53	biantrurd 533	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (𝑐𝑁𝑑 ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
55	54	ad2antrr 724	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (𝑐𝑁𝑑 ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
56	46, 48, 55	3bitr4d 310	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ 𝑐𝑁𝑑))
57	31, 56	bitrid 282	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ 𝑐𝑁𝑑))
58	57	pm5.32da 579	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
59	19, 58	bitr3d 280	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
60	59	rexbidva 3176	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (∃𝑎 ∈ 𝑉 (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ∃𝑎 ∈ 𝑉 ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
61	16, 60	bitrd 278	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (∃𝑎 ∈ dom 𝐹(𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ∃𝑎 ∈ 𝑉 ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
62		fvex 6904	. . . . . . . . . . . 12 ⊢ (𝐹‘𝑐) ∈ V
63	62, 28	brcnv 5882	. . . . . . . . . . 11 ⊢ ((𝐹‘𝑐)^◡𝐹𝑎 ↔ 𝑎𝐹(𝐹‘𝑐))
64	63	anbi1i 624	. . . . . . . . . 10 ⊢ (((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)))
65	28, 62	breldm 5908	. . . . . . . . . . . 12 ⊢ (𝑎𝐹(𝐹‘𝑐) → 𝑎 ∈ dom 𝐹)
66	65	adantr 481	. . . . . . . . . . 11 ⊢ ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) → 𝑎 ∈ dom 𝐹)
67	66	pm4.71ri 561	. . . . . . . . . 10 ⊢ ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
68	64, 67	bitri 274	. . . . . . . . 9 ⊢ (((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
69	68	exbii 1850	. . . . . . . 8 ⊢ (∃𝑎((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ∃𝑎(𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
70	62, 22	brco 5870	. . . . . . . 8 ⊢ ((𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑) ↔ ∃𝑎((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)))
71		df-rex 3071	. . . . . . . 8 ⊢ (∃𝑎 ∈ dom 𝐹(𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ∃𝑎(𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
72	69, 70, 71	3bitr4ri 303	. . . . . . 7 ⊢ (∃𝑎 ∈ dom 𝐹(𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑))
73		r19.41v 3188	. . . . . . 7 ⊢ (∃𝑎 ∈ 𝑉 ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑) ↔ (∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑))
74	61, 72, 73	3bitr3g 312	. . . . . 6 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ((𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑) ↔ (∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
75		imasless.u	. . . . . . . . 9 ⊢ (𝜑 → 𝑈 = (𝐹 “_s 𝑅))
76		imasless.v	. . . . . . . . 9 ⊢ (𝜑 → 𝑉 = (Base‘𝑅))
77		imasless.r	. . . . . . . . 9 ⊢ (𝜑 → 𝑅 ∈ 𝑍)
78		imasleval.n	. . . . . . . . 9 ⊢ 𝑁 = (le‘𝑅)
79		imasless.l	. . . . . . . . 9 ⊢ ≤ = (le‘𝑈)
80	75, 76, 11, 77, 78, 79	imasle 17471	. . . . . . . 8 ⊢ (𝜑 → ≤ = ((𝐹 ∘ 𝑁) ∘ ^◡𝐹))
81	80	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ≤ = ((𝐹 ∘ 𝑁) ∘ ^◡𝐹))
82	81	breqd 5159	. . . . . 6 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑)))
83		simprl 769	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝑐 ∈ 𝑉)
84		eqid 2732	. . . . . . . 8 ⊢ (𝐹‘𝑐) = (𝐹‘𝑐)
85		fveqeq2 6900	. . . . . . . . 9 ⊢ (𝑎 = 𝑐 → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ (𝐹‘𝑐) = (𝐹‘𝑐)))
86	85	rspcev 3612	. . . . . . . 8 ⊢ ((𝑐 ∈ 𝑉 ∧ (𝐹‘𝑐) = (𝐹‘𝑐)) → ∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐))
87	83, 84, 86	sylancl 586	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐))
88	87	biantrurd 533	. . . . . 6 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (𝑐𝑁𝑑 ↔ (∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
89	74, 82, 88	3bitr4d 310	. . . . 5 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑))
90	89	expcom 414	. . . 4 ⊢ ((𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉) → (𝜑 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑)))
91	5, 10, 90	vtocl2ga 3566	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝜑 → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌)))
92	91	com12 32	. 2 ⊢ (𝜑 → ((𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌)))
93	92	3impib 1116	1 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∃wex 1781 ∈ wcel 2106 ∃wrex 3070 class class class wbr 5148 ^◡ccnv 5675 dom cdm 5676 ∘ ccom 5680 Fn wfn 6538 –onto→wfo 6541 ‘cfv 6543 (class class class)co 7411 Basecbs 17146 lecple 17206 “_s cimas 17452

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9439 df-inf 9440 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-nn 12215 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12475 df-z 12561 df-dec 12680 df-uz 12825 df-fz 13487 df-struct 17082 df-slot 17117 df-ndx 17129 df-base 17147 df-plusg 17212 df-mulr 17213 df-sca 17215 df-vsca 17216 df-ip 17217 df-tset 17218 df-ple 17219 df-ds 17221 df-imas 17456

This theorem is referenced by: xpsle 17527

W3C validator