Theorem frrlem15 9650

Description: Lemma for general well-founded recursion. Two acceptable functions are compatible. (Contributed by Scott Fenton, 11-Sep-2023.)

Hypotheses

Ref	Expression
frrlem15.1	⊢ 𝐵 = {𝑓 ∣ ∃𝑥(𝑓 Fn 𝑥 ∧ (𝑥 ⊆ 𝐴 ∧ ∀𝑦 ∈ 𝑥 Pred(𝑅, 𝐴, 𝑦) ⊆ 𝑥) ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝑦𝐺(𝑓 ↾ Pred(𝑅, 𝐴, 𝑦))))}
frrlem15.2	⊢ 𝐹 = frecs(𝑅, 𝐴, 𝐺)

Assertion

Ref	Expression
frrlem15	⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → 𝑢 = 𝑣))

Distinct variable groups:   𝐴,𝑓,𝑥,𝑦,𝑔,ℎ,𝑢,𝑣   𝑅,𝑓,𝑥,𝑦,𝑔,ℎ,𝑢,𝑣   𝑓,𝐺,𝑥,𝑦,𝑔,ℎ,𝑢,𝑣

Allowed substitution hints:   𝐵(𝑥,𝑦,𝑣,𝑢,𝑓,𝑔,ℎ)   𝐹(𝑥,𝑦,𝑣,𝑢,𝑓,𝑔,ℎ)

Proof of Theorem frrlem15

Dummy variable 𝑎 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		vex 3440	. . . . . 6 ⊢ 𝑥 ∈ V
2		vex 3440	. . . . . 6 ⊢ 𝑢 ∈ V
3	1, 2	breldm 5847	. . . . 5 ⊢ (𝑥𝑔𝑢 → 𝑥 ∈ dom 𝑔)
4	3	adantr 480	. . . 4 ⊢ ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → 𝑥 ∈ dom 𝑔)
5		vex 3440	. . . . . 6 ⊢ 𝑣 ∈ V
6	1, 5	breldm 5847	. . . . 5 ⊢ (𝑥ℎ𝑣 → 𝑥 ∈ dom ℎ)
7	6	adantl 481	. . . 4 ⊢ ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → 𝑥 ∈ dom ℎ)
8	4, 7	elind 4147	. . 3 ⊢ ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → 𝑥 ∈ (dom 𝑔 ∩ dom ℎ))
9		id 22	. . 3 ⊢ ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → (𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣))
10	2	brresi 5936	. . . . 5 ⊢ (𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ↔ (𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥𝑔𝑢))
11	5	brresi 5936	. . . . 5 ⊢ (𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣 ↔ (𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥ℎ𝑣))
12	10, 11	anbi12i 628	. . . 4 ⊢ ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣) ↔ ((𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥𝑔𝑢) ∧ (𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥ℎ𝑣)))
13		an4 656	. . . 4 ⊢ (((𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥𝑔𝑢) ∧ (𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥ℎ𝑣)) ↔ ((𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥 ∈ (dom 𝑔 ∩ dom ℎ)) ∧ (𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣)))
14	12, 13	bitri 275	. . 3 ⊢ ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣) ↔ ((𝑥 ∈ (dom 𝑔 ∩ dom ℎ) ∧ 𝑥 ∈ (dom 𝑔 ∩ dom ℎ)) ∧ (𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣)))
15	8, 8, 9, 14	syl21anbrc 1345	. 2 ⊢ ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → (𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣))
16		inss1 4184	. . . . . . . . 9 ⊢ (dom 𝑔 ∩ dom ℎ) ⊆ dom 𝑔
17		frrlem15.1	. . . . . . . . . 10 ⊢ 𝐵 = {𝑓 ∣ ∃𝑥(𝑓 Fn 𝑥 ∧ (𝑥 ⊆ 𝐴 ∧ ∀𝑦 ∈ 𝑥 Pred(𝑅, 𝐴, 𝑦) ⊆ 𝑥) ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝑦𝐺(𝑓 ↾ Pred(𝑅, 𝐴, 𝑦))))}
18	17	frrlem3 8218	. . . . . . . . 9 ⊢ (𝑔 ∈ 𝐵 → dom 𝑔 ⊆ 𝐴)
19	16, 18	sstrid 3941	. . . . . . . 8 ⊢ (𝑔 ∈ 𝐵 → (dom 𝑔 ∩ dom ℎ) ⊆ 𝐴)
20	19	ad2antrl 728	. . . . . . 7 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → (dom 𝑔 ∩ dom ℎ) ⊆ 𝐴)
21		simpll 766	. . . . . . 7 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → 𝑅 Fr 𝐴)
22		frss 5578	. . . . . . 7 ⊢ ((dom 𝑔 ∩ dom ℎ) ⊆ 𝐴 → (𝑅 Fr 𝐴 → 𝑅 Fr (dom 𝑔 ∩ dom ℎ)))
23	20, 21, 22	sylc 65	. . . . . 6 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → 𝑅 Fr (dom 𝑔 ∩ dom ℎ))
24		simplr 768	. . . . . . 7 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → 𝑅 Se 𝐴)
25		sess2 5580	. . . . . . 7 ⊢ ((dom 𝑔 ∩ dom ℎ) ⊆ 𝐴 → (𝑅 Se 𝐴 → 𝑅 Se (dom 𝑔 ∩ dom ℎ)))
26	20, 24, 25	sylc 65	. . . . . 6 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → 𝑅 Se (dom 𝑔 ∩ dom ℎ))
27	17	frrlem4 8219	. . . . . . 7 ⊢ ((𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵) → ((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((𝑔 ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))))
28	27	adantl 481	. . . . . 6 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((𝑔 ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))))
29	17	frrlem4 8219	. . . . . . . . 9 ⊢ ((ℎ ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → ((ℎ ↾ (dom ℎ ∩ dom 𝑔)) Fn (dom ℎ ∩ dom 𝑔) ∧ ∀𝑎 ∈ (dom ℎ ∩ dom 𝑔)((ℎ ↾ (dom ℎ ∩ dom 𝑔))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎)))))
30		incom 4156	. . . . . . . . . . . 12 ⊢ (dom 𝑔 ∩ dom ℎ) = (dom ℎ ∩ dom 𝑔)
31	30	reseq2i 5924	. . . . . . . . . . 11 ⊢ (ℎ ↾ (dom 𝑔 ∩ dom ℎ)) = (ℎ ↾ (dom ℎ ∩ dom 𝑔))
32		fneq12 6577	. . . . . . . . . . 11 ⊢ (((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) = (ℎ ↾ (dom ℎ ∩ dom 𝑔)) ∧ (dom 𝑔 ∩ dom ℎ) = (dom ℎ ∩ dom 𝑔)) → ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ↔ (ℎ ↾ (dom ℎ ∩ dom 𝑔)) Fn (dom ℎ ∩ dom 𝑔)))
33	31, 30, 32	mp2an 692	. . . . . . . . . 10 ⊢ ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ↔ (ℎ ↾ (dom ℎ ∩ dom 𝑔)) Fn (dom ℎ ∩ dom 𝑔))
34	31	fveq1i 6823	. . . . . . . . . . . 12 ⊢ ((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = ((ℎ ↾ (dom ℎ ∩ dom 𝑔))‘𝑎)
35		predeq2 6251	. . . . . . . . . . . . . . 15 ⊢ ((dom 𝑔 ∩ dom ℎ) = (dom ℎ ∩ dom 𝑔) → Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎) = Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎))
36	30, 35	ax-mp 5	. . . . . . . . . . . . . 14 ⊢ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎) = Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎)
37	31, 36	reseq12i 5925	. . . . . . . . . . . . 13 ⊢ ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)) = ((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎))
38	37	oveq2i 7357	. . . . . . . . . . . 12 ⊢ (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎))) = (𝑎𝐺((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎)))
39	34, 38	eqeq12i 2749	. . . . . . . . . . 11 ⊢ (((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎))) ↔ ((ℎ ↾ (dom ℎ ∩ dom 𝑔))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎))))
40	30, 39	raleqbii 3310	. . . . . . . . . 10 ⊢ (∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎))) ↔ ∀𝑎 ∈ (dom ℎ ∩ dom 𝑔)((ℎ ↾ (dom ℎ ∩ dom 𝑔))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎))))
41	33, 40	anbi12i 628	. . . . . . . . 9 ⊢ (((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))) ↔ ((ℎ ↾ (dom ℎ ∩ dom 𝑔)) Fn (dom ℎ ∩ dom 𝑔) ∧ ∀𝑎 ∈ (dom ℎ ∩ dom 𝑔)((ℎ ↾ (dom ℎ ∩ dom 𝑔))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom ℎ ∩ dom 𝑔)) ↾ Pred(𝑅, (dom ℎ ∩ dom 𝑔), 𝑎)))))
42	29, 41	sylibr 234	. . . . . . . 8 ⊢ ((ℎ ∈ 𝐵 ∧ 𝑔 ∈ 𝐵) → ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))))
43	42	ancoms 458	. . . . . . 7 ⊢ ((𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵) → ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))))
44	43	adantl 481	. . . . . 6 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))))
45		frr3g 9649	. . . . . 6 ⊢ (((𝑅 Fr (dom 𝑔 ∩ dom ℎ) ∧ 𝑅 Se (dom 𝑔 ∩ dom ℎ)) ∧ ((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((𝑔 ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎)))) ∧ ((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) Fn (dom 𝑔 ∩ dom ℎ) ∧ ∀𝑎 ∈ (dom 𝑔 ∩ dom ℎ)((ℎ ↾ (dom 𝑔 ∩ dom ℎ))‘𝑎) = (𝑎𝐺((ℎ ↾ (dom 𝑔 ∩ dom ℎ)) ↾ Pred(𝑅, (dom 𝑔 ∩ dom ℎ), 𝑎))))) → (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) = (ℎ ↾ (dom 𝑔 ∩ dom ℎ)))
46	23, 26, 28, 44, 45	syl211anc 1378	. . . . 5 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) = (ℎ ↾ (dom 𝑔 ∩ dom ℎ)))
47	46	breqd 5100	. . . 4 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → (𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣 ↔ 𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣))
48	47	biimprd 248	. . 3 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → (𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣 → 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣))
49	17	frrlem2 8217	. . . . . 6 ⊢ (𝑔 ∈ 𝐵 → Fun 𝑔)
50	49	funresd 6524	. . . . 5 ⊢ (𝑔 ∈ 𝐵 → Fun (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)))
51	50	ad2antrl 728	. . . 4 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → Fun (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)))
52		dffun2 6491	. . . . 5 ⊢ (Fun (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) ↔ (Rel (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) ∧ ∀𝑥∀𝑢∀𝑣((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣)))
53		2sp 2189	. . . . . 6 ⊢ (∀𝑢∀𝑣((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣) → ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣))
54	53	sps 2188	. . . . 5 ⊢ (∀𝑥∀𝑢∀𝑣((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣) → ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣))
55	52, 54	simplbiim 504	. . . 4 ⊢ (Fun (𝑔 ↾ (dom 𝑔 ∩ dom ℎ)) → ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣))
56	51, 55	syl 17	. . 3 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣))
57	48, 56	sylan2d 605	. 2 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((𝑥(𝑔 ↾ (dom 𝑔 ∩ dom ℎ))𝑢 ∧ 𝑥(ℎ ↾ (dom 𝑔 ∩ dom ℎ))𝑣) → 𝑢 = 𝑣))
58	15, 57	syl5 34	1 ⊢ (((𝑅 Fr 𝐴 ∧ 𝑅 Se 𝐴) ∧ (𝑔 ∈ 𝐵 ∧ ℎ ∈ 𝐵)) → ((𝑥𝑔𝑢 ∧ 𝑥ℎ𝑣) → 𝑢 = 𝑣))

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086  ∀wal 1539   = wceq 1541  ∃wex 1780   ∈ wcel 2111  {cab 2709  ∀wral 3047   ∩ cin 3896   ⊆ wss 3897   class class class wbr 5089   Fr wfr 5564   Se wse 5565  dom cdm 5614   ↾ cres 5616  Rel wrel 5619  Predcpred 6247  Fun wfun 6475   Fn wfn 6476  ‘cfv 6481  (class class class)co 7346  frecscfrecs 8210

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5215  ax-sep 5232  ax-nul 5242  ax-pr 5368  ax-un 7668  ax-inf2 9531

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-pss 3917  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-int 4896  df-iun 4941  df-br 5090  df-opab 5152  df-mpt 5171  df-tr 5197  df-id 5509  df-eprel 5514  df-po 5522  df-so 5523  df-fr 5567  df-se 5568  df-we 5569  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-pred 6248  df-ord 6309  df-on 6310  df-lim 6311  df-suc 6312  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-riota 7303  df-ov 7349  df-oprab 7350  df-mpo 7351  df-om 7797  df-2nd 7922  df-frecs 8211  df-wrecs 8242  df-recs 8291  df-rdg 8329  df-1o 8385  df-oadd 8389  df-ttrcl 9598

This theorem is referenced by:  frr1  9652  frr2  9653