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Theorem imasleval 17487

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 6892	. . . . . . 7 ⊢ (𝑐 = 𝑋 → (𝐹‘𝑐) = (𝐹‘𝑋))
2	1	breq1d 5159	. . . . . 6 ⊢ (𝑐 = 𝑋 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑑)))
3		breq1 5152	. . . . . 6 ⊢ (𝑐 = 𝑋 → (𝑐𝑁𝑑 ↔ 𝑋𝑁𝑑))
4	2, 3	bibi12d 346	. . . . 5 ⊢ (𝑐 = 𝑋 → (((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑) ↔ ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑)))
5	4	imbi2d 341	. . . 4 ⊢ (𝑐 = 𝑋 → ((𝜑 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑)) ↔ (𝜑 → ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑))))
6		fveq2 6892	. . . . . . 7 ⊢ (𝑑 = 𝑌 → (𝐹‘𝑑) = (𝐹‘𝑌))
7	6	breq2d 5161	. . . . . 6 ⊢ (𝑑 = 𝑌 → ((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑋) ≤ (𝐹‘𝑌)))
8		breq2 5153	. . . . . 6 ⊢ (𝑑 = 𝑌 → (𝑋𝑁𝑑 ↔ 𝑋𝑁𝑌))
9	7, 8	bibi12d 346	. . . . 5 ⊢ (𝑑 = 𝑌 → (((𝐹‘𝑋) ≤ (𝐹‘𝑑) ↔ 𝑋𝑁𝑑) ↔ ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌)))
10	9	imbi2d 341	. . . 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 6808	. . . . . . . . . . . 12 ⊢ (𝐹:𝑉–onto→𝐵 → 𝐹 Fn 𝑉)
13	11, 12	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹 Fn 𝑉)
14	13	adantr 482	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝐹 Fn 𝑉)
15	14	fndmd 6655	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → dom 𝐹 = 𝑉)
16	15	rexeqdv 3327	. . . . . . . 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 6945	. . . . . . . . . . . 12 ⊢ ((𝐹 Fn 𝑉 ∧ 𝑎 ∈ 𝑉) → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ 𝑎𝐹(𝐹‘𝑐)))
18	14, 17	sylan 581	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ 𝑎𝐹(𝐹‘𝑐)))
19	18	anbi1d 631	. . . . . . . . . 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 462	. . . . . . . . . . . . . . 15 ⊢ ((𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏))
21		vex 3479	. . . . . . . . . . . . . . . . . 18 ⊢ 𝑏 ∈ V
22		fvex 6905	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐹‘𝑑) ∈ V
23	21, 22	breldm 5909	. . . . . . . . . . . . . . . . 17 ⊢ (𝑏𝐹(𝐹‘𝑑) → 𝑏 ∈ dom 𝐹)
24	23	adantr 482	. . . . . . . . . . . . . . . 16 ⊢ ((𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) → 𝑏 ∈ dom 𝐹)
25	24	pm4.71ri 562	. . . . . . . . . . . . . . 15 ⊢ ((𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ (𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
26	20, 25	bitri 275	. . . . . . . . . . . . . 14 ⊢ ((𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ (𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
27	26	exbii 1851	. . . . . . . . . . . . 13 ⊢ (∃𝑏(𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)) ↔ ∃𝑏(𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
28		vex 3479	. . . . . . . . . . . . . 14 ⊢ 𝑎 ∈ V
29	28, 22	brco 5871	. . . . . . . . . . . . 13 ⊢ (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ ∃𝑏(𝑎𝑁𝑏 ∧ 𝑏𝐹(𝐹‘𝑑)))
30		df-rex 3072	. . . . . . . . . . . . 13 ⊢ (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏(𝑏 ∈ dom 𝐹 ∧ (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
31	27, 29, 30	3bitr4i 303	. . . . . . . . . . . 12 ⊢ (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ ∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏))
32	14	ad2antrr 725	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → 𝐹 Fn 𝑉)
33		fnbrfvb 6945	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn 𝑉 ∧ 𝑏 ∈ 𝑉) → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ 𝑏𝐹(𝐹‘𝑑)))
34	32, 33	sylan 581	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ 𝑏 ∈ 𝑉) → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ 𝑏𝐹(𝐹‘𝑑)))
35	34	anbi1d 631	. . . . . . . . . . . . . . . 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 1119	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝜑 ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉)) ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
38	37	an32s 651	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ (𝑎 ∈ 𝑉 ∧ 𝑏 ∈ 𝑉)) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
39	38	anassrs 469	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ 𝑏 ∈ 𝑉) → (((𝐹‘𝑎) = (𝐹‘𝑐) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑)))
40	39	impl 457	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ 𝑏 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) ∧ (𝐹‘𝑏) = (𝐹‘𝑑)) → (𝑎𝑁𝑏 ↔ 𝑐𝑁𝑑))
41	40	pm5.32da 580	. . . . . . . . . . . . . . . . 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 651	. . . . . . . . . . . . . . . 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 281	. . . . . . . . . . . . . . 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 3177	. . . . . . . . . . . . . 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 3189	. . . . . . . . . . . . . 14 ⊢ (∃𝑏 ∈ 𝑉 ((𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑) ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑))
46	44, 45	bitrdi 287	. . . . . . . . . . . . 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 3327	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ ∃𝑏 ∈ 𝑉 (𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏)))
48	47	ad2antrr 725	. . . . . . . . . . . . 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 772	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝑑 ∈ 𝑉)
50		eqid 2733	. . . . . . . . . . . . . . . 16 ⊢ (𝐹‘𝑑) = (𝐹‘𝑑)
51		fveqeq2 6901	. . . . . . . . . . . . . . . . 17 ⊢ (𝑏 = 𝑑 → ((𝐹‘𝑏) = (𝐹‘𝑑) ↔ (𝐹‘𝑑) = (𝐹‘𝑑)))
52	51	rspcev 3613	. . . . . . . . . . . . . . . 16 ⊢ ((𝑑 ∈ 𝑉 ∧ (𝐹‘𝑑) = (𝐹‘𝑑)) → ∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑))
53	49, 50, 52	sylancl 587	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑))
54	53	biantrurd 534	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (𝑐𝑁𝑑 ↔ (∃𝑏 ∈ 𝑉 (𝐹‘𝑏) = (𝐹‘𝑑) ∧ 𝑐𝑁𝑑)))
55	54	ad2antrr 725	. . . . . . . . . . . . 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 311	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (∃𝑏 ∈ dom 𝐹(𝑏𝐹(𝐹‘𝑑) ∧ 𝑎𝑁𝑏) ↔ 𝑐𝑁𝑑))
57	31, 56	bitrid 283	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) ∧ (𝐹‘𝑎) = (𝐹‘𝑐)) → (𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑) ↔ 𝑐𝑁𝑑))
58	57	pm5.32da 580	. . . . . . . . . 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 281	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) ∧ 𝑎 ∈ 𝑉) → ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
60	59	rexbidva 3177	. . . . . . . 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 279	. . . . . . 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 6905	. . . . . . . . . . . 12 ⊢ (𝐹‘𝑐) ∈ V
63	62, 28	brcnv 5883	. . . . . . . . . . 11 ⊢ ((𝐹‘𝑐)^◡𝐹𝑎 ↔ 𝑎𝐹(𝐹‘𝑐))
64	63	anbi1i 625	. . . . . . . . . 10 ⊢ (((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)))
65	28, 62	breldm 5909	. . . . . . . . . . . 12 ⊢ (𝑎𝐹(𝐹‘𝑐) → 𝑎 ∈ dom 𝐹)
66	65	adantr 482	. . . . . . . . . . 11 ⊢ ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) → 𝑎 ∈ dom 𝐹)
67	66	pm4.71ri 562	. . . . . . . . . 10 ⊢ ((𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
68	64, 67	bitri 275	. . . . . . . . 9 ⊢ (((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝑎 ∈ dom 𝐹 ∧ (𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑))))
69	68	exbii 1851	. . . . . . . 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 5871	. . . . . . . 8 ⊢ ((𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑) ↔ ∃𝑎((𝐹‘𝑐)^◡𝐹𝑎 ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)))
71		df-rex 3072	. . . . . . . 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 304	. . . . . . 7 ⊢ (∃𝑎 ∈ dom 𝐹(𝑎𝐹(𝐹‘𝑐) ∧ 𝑎(𝐹 ∘ 𝑁)(𝐹‘𝑑)) ↔ (𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑))
73		r19.41v 3189	. . . . . . 7 ⊢ (∃𝑎 ∈ 𝑉 ((𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑) ↔ (∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑))
74	61, 72, 73	3bitr3g 313	. . . . . 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 17469	. . . . . . . 8 ⊢ (𝜑 → ≤ = ((𝐹 ∘ 𝑁) ∘ ^◡𝐹))
81	80	adantr 482	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ≤ = ((𝐹 ∘ 𝑁) ∘ ^◡𝐹))
82	81	breqd 5160	. . . . . 6 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ (𝐹‘𝑐)((𝐹 ∘ 𝑁) ∘ ^◡𝐹)(𝐹‘𝑑)))
83		simprl 770	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → 𝑐 ∈ 𝑉)
84		eqid 2733	. . . . . . . 8 ⊢ (𝐹‘𝑐) = (𝐹‘𝑐)
85		fveqeq2 6901	. . . . . . . . 9 ⊢ (𝑎 = 𝑐 → ((𝐹‘𝑎) = (𝐹‘𝑐) ↔ (𝐹‘𝑐) = (𝐹‘𝑐)))
86	85	rspcev 3613	. . . . . . . 8 ⊢ ((𝑐 ∈ 𝑉 ∧ (𝐹‘𝑐) = (𝐹‘𝑐)) → ∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐))
87	83, 84, 86	sylancl 587	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐))
88	87	biantrurd 534	. . . . . 6 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → (𝑐𝑁𝑑 ↔ (∃𝑎 ∈ 𝑉 (𝐹‘𝑎) = (𝐹‘𝑐) ∧ 𝑐𝑁𝑑)))
89	74, 82, 88	3bitr4d 311	. . . . 5 ⊢ ((𝜑 ∧ (𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉)) → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑))
90	89	expcom 415	. . . 4 ⊢ ((𝑐 ∈ 𝑉 ∧ 𝑑 ∈ 𝑉) → (𝜑 → ((𝐹‘𝑐) ≤ (𝐹‘𝑑) ↔ 𝑐𝑁𝑑)))
91	5, 10, 90	vtocl2ga 3567	. . 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 1117	1 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝐹‘𝑋) ≤ (𝐹‘𝑌) ↔ 𝑋𝑁𝑌))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∃wex 1782 ∈ wcel 2107 ∃wrex 3071 class class class wbr 5149 ^◡ccnv 5676 dom cdm 5677 ∘ ccom 5681 Fn wfn 6539 –onto→wfo 6542 ‘cfv 6544 (class class class)co 7409 Basecbs 17144 lecple 17204 “_s cimas 17450

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 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-er 8703 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9437 df-inf 9438 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-z 12559 df-dec 12678 df-uz 12823 df-fz 13485 df-struct 17080 df-slot 17115 df-ndx 17127 df-base 17145 df-plusg 17210 df-mulr 17211 df-sca 17213 df-vsca 17214 df-ip 17215 df-tset 17216 df-ple 17217 df-ds 17219 df-imas 17454

This theorem is referenced by: xpsle 17525

W3C validator