Theorem kgencn2 22908

Description: A function 𝐹:𝐽⟶𝐾 from a compactly generated space is continuous iff for all compact spaces 𝑧 and continuous 𝑔:𝑧⟶𝐽, the composite 𝐹 ∘ 𝑔:𝑧⟶𝐾 is continuous. (Contributed by Mario Carneiro, 21-Mar-2015.)

Assertion

Ref	Expression
kgencn2	⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → (𝐹 ∈ ((𝑘Gen‘𝐽) Cn 𝐾) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾))))

Distinct variable groups:   𝑧,𝑔,𝐹   𝑔,𝐽,𝑧   𝑔,𝐾,𝑧   𝑔,𝑋,𝑧   𝑔,𝑌,𝑧

Proof of Theorem kgencn2

Dummy variable 𝑘 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		kgencn 22907	. 2 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → (𝐹 ∈ ((𝑘Gen‘𝐽) Cn 𝐾) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))))
2		rncmp 22747	. . . . . . . 8 ⊢ ((𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽)) → (𝐽 ↾t ran 𝑔) ∈ Comp)
3	2	adantl 482	. . . . . . 7 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → (𝐽 ↾t ran 𝑔) ∈ Comp)
4		simprr 771	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → 𝑔 ∈ (𝑧 Cn 𝐽))
5		eqid 2736	. . . . . . . . . . . 12 ⊢ ∪ 𝑧 = ∪ 𝑧
6		eqid 2736	. . . . . . . . . . . 12 ⊢ ∪ 𝐽 = ∪ 𝐽
7	5, 6	cnf 22597	. . . . . . . . . . 11 ⊢ (𝑔 ∈ (𝑧 Cn 𝐽) → 𝑔:∪ 𝑧⟶∪ 𝐽)
8		frn 6675	. . . . . . . . . . 11 ⊢ (𝑔:∪ 𝑧⟶∪ 𝐽 → ran 𝑔 ⊆ ∪ 𝐽)
9	4, 7, 8	3syl 18	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ran 𝑔 ⊆ ∪ 𝐽)
10		toponuni 22263	. . . . . . . . . . 11 ⊢ (𝐽 ∈ (TopOn‘𝑋) → 𝑋 = ∪ 𝐽)
11	10	ad3antrrr 728	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → 𝑋 = ∪ 𝐽)
12	9, 11	sseqtrrd 3985	. . . . . . . . 9 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ran 𝑔 ⊆ 𝑋)
13		vex 3449	. . . . . . . . . . 11 ⊢ 𝑔 ∈ V
14	13	rnex 7849	. . . . . . . . . 10 ⊢ ran 𝑔 ∈ V
15	14	elpw 4564	. . . . . . . . 9 ⊢ (ran 𝑔 ∈ 𝒫 𝑋 ↔ ran 𝑔 ⊆ 𝑋)
16	12, 15	sylibr 233	. . . . . . . 8 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ran 𝑔 ∈ 𝒫 𝑋)
17		oveq2 7365	. . . . . . . . . . 11 ⊢ (𝑘 = ran 𝑔 → (𝐽 ↾t 𝑘) = (𝐽 ↾t ran 𝑔))
18	17	eleq1d 2822	. . . . . . . . . 10 ⊢ (𝑘 = ran 𝑔 → ((𝐽 ↾t 𝑘) ∈ Comp ↔ (𝐽 ↾t ran 𝑔) ∈ Comp))
19		reseq2 5932	. . . . . . . . . . 11 ⊢ (𝑘 = ran 𝑔 → (𝐹 ↾ 𝑘) = (𝐹 ↾ ran 𝑔))
20	17	oveq1d 7372	. . . . . . . . . . 11 ⊢ (𝑘 = ran 𝑔 → ((𝐽 ↾t 𝑘) Cn 𝐾) = ((𝐽 ↾t ran 𝑔) Cn 𝐾))
21	19, 20	eleq12d 2832	. . . . . . . . . 10 ⊢ (𝑘 = ran 𝑔 → ((𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) ↔ (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾)))
22	18, 21	imbi12d 344	. . . . . . . . 9 ⊢ (𝑘 = ran 𝑔 → (((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) ↔ ((𝐽 ↾t ran 𝑔) ∈ Comp → (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾))))
23	22	rspcv 3577	. . . . . . . 8 ⊢ (ran 𝑔 ∈ 𝒫 𝑋 → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) → ((𝐽 ↾t ran 𝑔) ∈ Comp → (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾))))
24	16, 23	syl 17	. . . . . . 7 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) → ((𝐽 ↾t ran 𝑔) ∈ Comp → (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾))))
25	3, 24	mpid 44	. . . . . 6 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) → (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾)))
26		simplll 773	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → 𝐽 ∈ (TopOn‘𝑋))
27		ssidd 3967	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ran 𝑔 ⊆ ran 𝑔)
28		cnrest2 22637	. . . . . . . . . 10 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ ran 𝑔 ⊆ ran 𝑔 ∧ ran 𝑔 ⊆ 𝑋) → (𝑔 ∈ (𝑧 Cn 𝐽) ↔ 𝑔 ∈ (𝑧 Cn (𝐽 ↾t ran 𝑔))))
29	26, 27, 12, 28	syl3anc 1371	. . . . . . . . 9 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → (𝑔 ∈ (𝑧 Cn 𝐽) ↔ 𝑔 ∈ (𝑧 Cn (𝐽 ↾t ran 𝑔))))
30	4, 29	mpbid 231	. . . . . . . 8 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → 𝑔 ∈ (𝑧 Cn (𝐽 ↾t ran 𝑔)))
31		cnco 22617	. . . . . . . . 9 ⊢ ((𝑔 ∈ (𝑧 Cn (𝐽 ↾t ran 𝑔)) ∧ (𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾)) → ((𝐹 ↾ ran 𝑔) ∘ 𝑔) ∈ (𝑧 Cn 𝐾))
32	31	ex 413	. . . . . . . 8 ⊢ (𝑔 ∈ (𝑧 Cn (𝐽 ↾t ran 𝑔)) → ((𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾) → ((𝐹 ↾ ran 𝑔) ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
33	30, 32	syl 17	. . . . . . 7 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ((𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾) → ((𝐹 ↾ ran 𝑔) ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
34		ssid 3966	. . . . . . . . 9 ⊢ ran 𝑔 ⊆ ran 𝑔
35		cores 6201	. . . . . . . . 9 ⊢ (ran 𝑔 ⊆ ran 𝑔 → ((𝐹 ↾ ran 𝑔) ∘ 𝑔) = (𝐹 ∘ 𝑔))
36	34, 35	ax-mp 5	. . . . . . . 8 ⊢ ((𝐹 ↾ ran 𝑔) ∘ 𝑔) = (𝐹 ∘ 𝑔)
37	36	eleq1i 2828	. . . . . . 7 ⊢ (((𝐹 ↾ ran 𝑔) ∘ 𝑔) ∈ (𝑧 Cn 𝐾) ↔ (𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾))
38	33, 37	syl6ib 250	. . . . . 6 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → ((𝐹 ↾ ran 𝑔) ∈ ((𝐽 ↾t ran 𝑔) Cn 𝐾) → (𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
39	25, 38	syld 47	. . . . 5 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ (𝑧 ∈ Comp ∧ 𝑔 ∈ (𝑧 Cn 𝐽))) → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) → (𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
40	39	ralrimdvva 3203	. . . 4 ⊢ (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) → ∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
41		oveq1 7364	. . . . . . . . 9 ⊢ (𝑧 = (𝐽 ↾t 𝑘) → (𝑧 Cn 𝐽) = ((𝐽 ↾t 𝑘) Cn 𝐽))
42		oveq1 7364	. . . . . . . . . 10 ⊢ (𝑧 = (𝐽 ↾t 𝑘) → (𝑧 Cn 𝐾) = ((𝐽 ↾t 𝑘) Cn 𝐾))
43	42	eleq2d 2823	. . . . . . . . 9 ⊢ (𝑧 = (𝐽 ↾t 𝑘) → ((𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) ↔ (𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
44	41, 43	raleqbidv 3319	. . . . . . . 8 ⊢ (𝑧 = (𝐽 ↾t 𝑘) → (∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) ↔ ∀𝑔 ∈ ((𝐽 ↾t 𝑘) Cn 𝐽)(𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
45	44	rspcv 3577	. . . . . . 7 ⊢ ((𝐽 ↾t 𝑘) ∈ Comp → (∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) → ∀𝑔 ∈ ((𝐽 ↾t 𝑘) Cn 𝐽)(𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
46		elpwi 4567	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ 𝒫 𝑋 → 𝑘 ⊆ 𝑋)
47	46	adantl 482	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → 𝑘 ⊆ 𝑋)
48	47	resabs1d 5968	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → (( I ↾ 𝑋) ↾ 𝑘) = ( I ↾ 𝑘))
49		idcn 22608	. . . . . . . . . . . 12 ⊢ (𝐽 ∈ (TopOn‘𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
50	49	ad3antrrr 728	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
51	10	ad3antrrr 728	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → 𝑋 = ∪ 𝐽)
52	47, 51	sseqtrd 3984	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → 𝑘 ⊆ ∪ 𝐽)
53	6	cnrest 22636	. . . . . . . . . . 11 ⊢ ((( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽) ∧ 𝑘 ⊆ ∪ 𝐽) → (( I ↾ 𝑋) ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐽))
54	50, 52, 53	syl2anc 584	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → (( I ↾ 𝑋) ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐽))
55	48, 54	eqeltrrd 2839	. . . . . . . . 9 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → ( I ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐽))
56		coeq2 5814	. . . . . . . . . . 11 ⊢ (𝑔 = ( I ↾ 𝑘) → (𝐹 ∘ 𝑔) = (𝐹 ∘ ( I ↾ 𝑘)))
57	56	eleq1d 2822	. . . . . . . . . 10 ⊢ (𝑔 = ( I ↾ 𝑘) → ((𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) ↔ (𝐹 ∘ ( I ↾ 𝑘)) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
58	57	rspcv 3577	. . . . . . . . 9 ⊢ (( I ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐽) → (∀𝑔 ∈ ((𝐽 ↾t 𝑘) Cn 𝐽)(𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) → (𝐹 ∘ ( I ↾ 𝑘)) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
59	55, 58	syl 17	. . . . . . . 8 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → (∀𝑔 ∈ ((𝐽 ↾t 𝑘) Cn 𝐽)(𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) → (𝐹 ∘ ( I ↾ 𝑘)) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
60		coires1 6216	. . . . . . . . 9 ⊢ (𝐹 ∘ ( I ↾ 𝑘)) = (𝐹 ↾ 𝑘)
61	60	eleq1i 2828	. . . . . . . 8 ⊢ ((𝐹 ∘ ( I ↾ 𝑘)) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) ↔ (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾))
62	59, 61	syl6ib 250	. . . . . . 7 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → (∀𝑔 ∈ ((𝐽 ↾t 𝑘) Cn 𝐽)(𝐹 ∘ 𝑔) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾) → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)))
63	45, 62	syl9r 78	. . . . . 6 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → ((𝐽 ↾t 𝑘) ∈ Comp → (∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾))))
64	63	com23 86	. . . . 5 ⊢ ((((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) ∧ 𝑘 ∈ 𝒫 𝑋) → (∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) → ((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾))))
65	64	ralrimdva 3151	. . . 4 ⊢ (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) → (∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾) → ∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾))))
66	40, 65	impbid 211	. . 3 ⊢ (((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) ∧ 𝐹:𝑋⟶𝑌) → (∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾)) ↔ ∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾)))
67	66	pm5.32da 579	. 2 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → ((𝐹:𝑋⟶𝑌 ∧ ∀𝑘 ∈ 𝒫 𝑋((𝐽 ↾t 𝑘) ∈ Comp → (𝐹 ↾ 𝑘) ∈ ((𝐽 ↾t 𝑘) Cn 𝐾))) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾))))
68	1, 67	bitrd 278	1 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → (𝐹 ∈ ((𝑘Gen‘𝐽) Cn 𝐾) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑧 ∈ Comp ∀𝑔 ∈ (𝑧 Cn 𝐽)(𝐹 ∘ 𝑔) ∈ (𝑧 Cn 𝐾))))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 396   = wceq 1541   ∈ wcel 2106  ∀wral 3064   ⊆ wss 3910  𝒫 cpw 4560  ∪ cuni 4865   I cid 5530  ran crn 5634   ↾ cres 5635   ∘ ccom 5637  ⟶wf 6492  ‘cfv 6496  (class class class)co 7357   ↾_t crest 17302  TopOnctopon 22259   Cn ccn 22575  Compccmp 22737  𝑘Genckgen 22884

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-rep 5242  ax-sep 5256  ax-nul 5263  ax-pow 5320  ax-pr 5384  ax-un 7672

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 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-reu 3354  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-pss 3929  df-nul 4283  df-if 4487  df-pw 4562  df-sn 4587  df-pr 4589  df-op 4593  df-uni 4866  df-int 4908  df-iun 4956  df-br 5106  df-opab 5168  df-mpt 5189  df-tr 5223  df-id 5531  df-eprel 5537  df-po 5545  df-so 5546  df-fr 5588  df-we 5590  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-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6498  df-fn 6499  df-f 6500  df-f1 6501  df-fo 6502  df-f1o 6503  df-fv 6504  df-ov 7360  df-oprab 7361  df-mpo 7362  df-om 7803  df-1st 7921  df-2nd 7922  df-1o 8412  df-er 8648  df-map 8767  df-en 8884  df-dom 8885  df-fin 8887  df-fi 9347  df-rest 17304  df-topgen 17325  df-top 22243  df-topon 22260  df-bases 22296  df-cn 22578  df-cmp 22738  df-kgen 22885

This theorem is referenced by: (None)