f1cof1b - Mathbox for Alexander van der Vekens

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Theorem f1cof1b 45299

Description: If the range of 𝐹 equals the domain of 𝐺, then the composition (𝐺 ∘ 𝐹) is injective iff 𝐹 and 𝐺 are both injective. (Contributed by GL and AV, 19-Sep-2024.)

**Assertion**
Ref	Expression
f1cof1b	⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):𝐴–1-1→𝐷 ↔ (𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷)))

**Proof of Theorem f1cof1b**
Step	Hyp	Ref	Expression
1		simp1 1136	. . . . . . . . 9 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → 𝐹:𝐴⟶𝐵)
2		eqid 2736	. . . . . . . . 9 ⊢ (ran 𝐹 ∩ 𝐶) = (ran 𝐹 ∩ 𝐶)
3		eqid 2736	. . . . . . . . 9 ⊢ (^◡𝐹 “ 𝐶) = (^◡𝐹 “ 𝐶)
4		eqid 2736	. . . . . . . . 9 ⊢ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = (𝐹 ↾ (^◡𝐹 “ 𝐶))
5		simp2 1137	. . . . . . . . 9 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → 𝐺:𝐶⟶𝐷)
6		eqid 2736	. . . . . . . . 9 ⊢ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = (𝐺 ↾ (ran 𝐹 ∩ 𝐶))
7		simp3 1138	. . . . . . . . 9 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ran 𝐹 = 𝐶)
8	1, 2, 3, 4, 5, 6, 7	f1cof1blem 45298	. . . . . . . 8 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹 ∧ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺)))
9		simpll 765	. . . . . . . 8 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹 ∧ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺)) → (^◡𝐹 “ 𝐶) = 𝐴)
10		f1eq2 6734	. . . . . . . 8 ⊢ ((^◡𝐹 “ 𝐶) = 𝐴 → ((𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷 ↔ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷))
11	8, 9, 10	3syl 18	. . . . . . 7 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷 ↔ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷))
12	11	bicomd 222	. . . . . 6 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):𝐴–1-1→𝐷 ↔ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷))
13		ancom 461	. . . . . . . . . 10 ⊢ (((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹) ↔ ((𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹 ∧ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺))
14	13	anbi2i 623	. . . . . . . . 9 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) ↔ (((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹 ∧ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺)))
15	8, 14	sylibr 233	. . . . . . . 8 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)))
16	15	adantr 481	. . . . . . 7 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → (((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)))
17	1	adantr 481	. . . . . . . . 9 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → 𝐹:𝐴⟶𝐵)
18	5	adantr 481	. . . . . . . . 9 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → 𝐺:𝐶⟶𝐷)
19		simpr 485	. . . . . . . . 9 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷)
20	17, 2, 3, 4, 18, 6, 19	fcoresf1 45293	. . . . . . . 8 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → ((𝐹 ↾ (^◡𝐹 “ 𝐶)):(^◡𝐹 “ 𝐶)–1-1→(ran 𝐹 ∩ 𝐶) ∧ (𝐺 ↾ (ran 𝐹 ∩ 𝐶)):(ran 𝐹 ∩ 𝐶)–1-1→𝐷))
21	20	ancomd 462	. . . . . . 7 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)):(ran 𝐹 ∩ 𝐶)–1-1→𝐷 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)):(^◡𝐹 “ 𝐶)–1-1→(ran 𝐹 ∩ 𝐶)))
22		simprl 769	. . . . . . . . . 10 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → (𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺)
23		simpr 485	. . . . . . . . . . 11 ⊢ (((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) → (ran 𝐹 ∩ 𝐶) = 𝐶)
24	23	adantr 481	. . . . . . . . . 10 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → (ran 𝐹 ∩ 𝐶) = 𝐶)
25		eqidd 2737	. . . . . . . . . 10 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → 𝐷 = 𝐷)
26	22, 24, 25	f1eq123d 6776	. . . . . . . . 9 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)):(ran 𝐹 ∩ 𝐶)–1-1→𝐷 ↔ 𝐺:𝐶–1-1→𝐷))
27	26	biimpd 228	. . . . . . . 8 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)):(ran 𝐹 ∩ 𝐶)–1-1→𝐷 → 𝐺:𝐶–1-1→𝐷))
28		simprr 771	. . . . . . . . . 10 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)
29		simpll 765	. . . . . . . . . 10 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → (^◡𝐹 “ 𝐶) = 𝐴)
30	28, 29, 24	f1eq123d 6776	. . . . . . . . 9 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → ((𝐹 ↾ (^◡𝐹 “ 𝐶)):(^◡𝐹 “ 𝐶)–1-1→(ran 𝐹 ∩ 𝐶) ↔ 𝐹:𝐴–1-1→𝐶))
31	30	biimpd 228	. . . . . . . 8 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → ((𝐹 ↾ (^◡𝐹 “ 𝐶)):(^◡𝐹 “ 𝐶)–1-1→(ran 𝐹 ∩ 𝐶) → 𝐹:𝐴–1-1→𝐶))
32	27, 31	anim12d 609	. . . . . . 7 ⊢ ((((^◡𝐹 “ 𝐶) = 𝐴 ∧ (ran 𝐹 ∩ 𝐶) = 𝐶) ∧ ((𝐺 ↾ (ran 𝐹 ∩ 𝐶)) = 𝐺 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)) = 𝐹)) → (((𝐺 ↾ (ran 𝐹 ∩ 𝐶)):(ran 𝐹 ∩ 𝐶)–1-1→𝐷 ∧ (𝐹 ↾ (^◡𝐹 “ 𝐶)):(^◡𝐹 “ 𝐶)–1-1→(ran 𝐹 ∩ 𝐶)) → (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐶)))
33	16, 21, 32	sylc 65	. . . . . 6 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷) → (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐶))
34	12, 33	sylbida 592	. . . . 5 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷) → (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐶))
35		ffrn 6682	. . . . . . . . . . . 12 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹:𝐴⟶ran 𝐹)
36		ax-1 6	. . . . . . . . . . . 12 ⊢ (𝐹:𝐴⟶𝐵 → (𝐹:𝐴⟶ran 𝐹 → 𝐹:𝐴⟶𝐵))
37	35, 36	impbid2 225	. . . . . . . . . . 11 ⊢ (𝐹:𝐴⟶𝐵 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐴⟶ran 𝐹))
38	37	anbi1d 630	. . . . . . . . . 10 ⊢ (𝐹:𝐴⟶𝐵 → ((𝐹:𝐴⟶𝐵 ∧ Fun ^◡𝐹) ↔ (𝐹:𝐴⟶ran 𝐹 ∧ Fun ^◡𝐹)))
39		df-f1 6501	. . . . . . . . . 10 ⊢ (𝐹:𝐴–1-1→𝐵 ↔ (𝐹:𝐴⟶𝐵 ∧ Fun ^◡𝐹))
40		df-f1 6501	. . . . . . . . . 10 ⊢ (𝐹:𝐴–1-1→ran 𝐹 ↔ (𝐹:𝐴⟶ran 𝐹 ∧ Fun ^◡𝐹))
41	38, 39, 40	3bitr4g 313	. . . . . . . . 9 ⊢ (𝐹:𝐴⟶𝐵 → (𝐹:𝐴–1-1→𝐵 ↔ 𝐹:𝐴–1-1→ran 𝐹))
42	41	3ad2ant1 1133	. . . . . . . 8 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (𝐹:𝐴–1-1→𝐵 ↔ 𝐹:𝐴–1-1→ran 𝐹))
43		f1eq3 6735	. . . . . . . . 9 ⊢ (ran 𝐹 = 𝐶 → (𝐹:𝐴–1-1→ran 𝐹 ↔ 𝐹:𝐴–1-1→𝐶))
44	43	3ad2ant3 1135	. . . . . . . 8 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (𝐹:𝐴–1-1→ran 𝐹 ↔ 𝐹:𝐴–1-1→𝐶))
45	42, 44	bitrd 278	. . . . . . 7 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (𝐹:𝐴–1-1→𝐵 ↔ 𝐹:𝐴–1-1→𝐶))
46	45	anbi2d 629	. . . . . 6 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐵) ↔ (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐶)))
47	46	adantr 481	. . . . 5 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷) → ((𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐵) ↔ (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐶)))
48	34, 47	mpbird 256	. . . 4 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷) → (𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐵))
49	48	ancomd 462	. . 3 ⊢ (((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) ∧ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷) → (𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷))
50	49	ex 413	. 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):𝐴–1-1→𝐷 → (𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷)))
51		f1cof1 6749	. . . 4 ⊢ ((𝐺:𝐶–1-1→𝐷 ∧ 𝐹:𝐴–1-1→𝐵) → (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷)
52	51	ancoms 459	. . 3 ⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷) → (𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷)
53		imaeq2 6009	. . . . . . . 8 ⊢ (𝐶 = ran 𝐹 → (^◡𝐹 “ 𝐶) = (^◡𝐹 “ ran 𝐹))
54		cnvimarndm 6034	. . . . . . . 8 ⊢ (^◡𝐹 “ ran 𝐹) = dom 𝐹
55	53, 54	eqtrdi 2792	. . . . . . 7 ⊢ (𝐶 = ran 𝐹 → (^◡𝐹 “ 𝐶) = dom 𝐹)
56	55	eqcoms 2744	. . . . . 6 ⊢ (ran 𝐹 = 𝐶 → (^◡𝐹 “ 𝐶) = dom 𝐹)
57	56	3ad2ant3 1135	. . . . 5 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (^◡𝐹 “ 𝐶) = dom 𝐹)
58	1	fdmd 6679	. . . . 5 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → dom 𝐹 = 𝐴)
59	57, 58	eqtrd 2776	. . . 4 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → (^◡𝐹 “ 𝐶) = 𝐴)
60	59, 10	syl 17	. . 3 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):(^◡𝐹 “ 𝐶)–1-1→𝐷 ↔ (𝐺 ∘ 𝐹):𝐴–1-1→𝐷))
61	52, 60	imbitrid 243	. 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷) → (𝐺 ∘ 𝐹):𝐴–1-1→𝐷))
62	50, 61	impbid 211	1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐺:𝐶⟶𝐷 ∧ ran 𝐹 = 𝐶) → ((𝐺 ∘ 𝐹):𝐴–1-1→𝐷 ↔ (𝐹:𝐴–1-1→𝐵 ∧ 𝐺:𝐶–1-1→𝐷)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∩ cin 3909 ^◡ccnv 5632 dom cdm 5633 ran crn 5634 ↾ cres 5635 “ cima 5636 ∘ ccom 5637 Fun wfun 6490 ⟶wf 6492 –1-1→wf1 6493

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 2707 ax-sep 5256 ax-nul 5263 ax-pr 5384

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2889 df-ne 2944 df-ral 3065 df-rex 3074 df-rab 3408 df-v 3447 df-sbc 3740 df-csb 3856 df-dif 3913 df-un 3915 df-in 3917 df-ss 3927 df-nul 4283 df-if 4487 df-sn 4587 df-pr 4589 df-op 4593 df-uni 4866 df-br 5106 df-opab 5168 df-mpt 5189 df-id 5531 df-xp 5639 df-rel 5640 df-cnv 5641 df-co 5642 df-dm 5643 df-rn 5644 df-res 5645 df-ima 5646 df-iota 6448 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-fv 6504

This theorem is referenced by: f1ocof1ob 45303

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