Theorem kgen2cn 23495

Description: A continuous function is also continuous with the domain and codomain replaced by their compact generator topologies. (Contributed by Mario Carneiro, 21-Mar-2015.)

Assertion

Ref	Expression
kgen2cn	⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹 ∈ ((𝑘Gen‘𝐽) Cn (𝑘Gen‘𝐾)))

Proof of Theorem kgen2cn

Step	Hyp	Ref	Expression
1		cntop1 23176	. . . . . 6 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ∈ Top)
2		toptopon2 22854	. . . . . 6 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘∪ 𝐽))
3	1, 2	sylib 218	. . . . 5 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ∈ (TopOn‘∪ 𝐽))
4		kgentopon 23474	. . . . 5 ⊢ (𝐽 ∈ (TopOn‘∪ 𝐽) → (𝑘Gen‘𝐽) ∈ (TopOn‘∪ 𝐽))
5	3, 4	syl 17	. . . 4 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → (𝑘Gen‘𝐽) ∈ (TopOn‘∪ 𝐽))
6		kgenss 23479	. . . . 5 ⊢ (𝐽 ∈ Top → 𝐽 ⊆ (𝑘Gen‘𝐽))
7	1, 6	syl 17	. . . 4 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ⊆ (𝑘Gen‘𝐽))
8		eqid 2735	. . . . 5 ⊢ ∪ 𝐽 = ∪ 𝐽
9	8	cnss1 23212	. . . 4 ⊢ (((𝑘Gen‘𝐽) ∈ (TopOn‘∪ 𝐽) ∧ 𝐽 ⊆ (𝑘Gen‘𝐽)) → (𝐽 Cn 𝐾) ⊆ ((𝑘Gen‘𝐽) Cn 𝐾))
10	5, 7, 9	syl2anc 584	. . 3 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → (𝐽 Cn 𝐾) ⊆ ((𝑘Gen‘𝐽) Cn 𝐾))
11		kgenf 23477	. . . . . 6 ⊢ 𝑘Gen:Top⟶Top
12		ffn 6705	. . . . . 6 ⊢ (𝑘Gen:Top⟶Top → 𝑘Gen Fn Top)
13	11, 12	ax-mp 5	. . . . 5 ⊢ 𝑘Gen Fn Top
14		fnfvelrn 7069	. . . . 5 ⊢ ((𝑘Gen Fn Top ∧ 𝐽 ∈ Top) → (𝑘Gen‘𝐽) ∈ ran 𝑘Gen)
15	13, 1, 14	sylancr 587	. . . 4 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → (𝑘Gen‘𝐽) ∈ ran 𝑘Gen)
16		cntop2 23177	. . . 4 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐾 ∈ Top)
17		kgencn3 23494	. . . 4 ⊢ (((𝑘Gen‘𝐽) ∈ ran 𝑘Gen ∧ 𝐾 ∈ Top) → ((𝑘Gen‘𝐽) Cn 𝐾) = ((𝑘Gen‘𝐽) Cn (𝑘Gen‘𝐾)))
18	15, 16, 17	syl2anc 584	. . 3 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → ((𝑘Gen‘𝐽) Cn 𝐾) = ((𝑘Gen‘𝐽) Cn (𝑘Gen‘𝐾)))
19	10, 18	sseqtrd 3995	. 2 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → (𝐽 Cn 𝐾) ⊆ ((𝑘Gen‘𝐽) Cn (𝑘Gen‘𝐾)))
20		id 22	. 2 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹 ∈ (𝐽 Cn 𝐾))
21	19, 20	sseldd 3959	1 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹 ∈ ((𝑘Gen‘𝐽) Cn (𝑘Gen‘𝐾)))

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2108   ⊆ wss 3926  ∪ cuni 4883  ran crn 5655   Fn wfn 6525  ⟶wf 6526  ‘cfv 6530  (class class class)co 7403  Topctop 22829  TopOnctopon 22846   Cn ccn 23160  𝑘Genckgen 23469

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2707  ax-rep 5249  ax-sep 5266  ax-nul 5276  ax-pow 5335  ax-pr 5402  ax-un 7727

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2809  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-reu 3360  df-rab 3416  df-v 3461  df-sbc 3766  df-csb 3875  df-dif 3929  df-un 3931  df-in 3933  df-ss 3943  df-pss 3946  df-nul 4309  df-if 4501  df-pw 4577  df-sn 4602  df-pr 4604  df-op 4608  df-uni 4884  df-int 4923  df-iun 4969  df-br 5120  df-opab 5182  df-mpt 5202  df-tr 5230  df-id 5548  df-eprel 5553  df-po 5561  df-so 5562  df-fr 5606  df-we 5608  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-res 5666  df-ima 5667  df-ord 6355  df-on 6356  df-lim 6357  df-suc 6358  df-iota 6483  df-fun 6532  df-fn 6533  df-f 6534  df-f1 6535  df-fo 6536  df-f1o 6537  df-fv 6538  df-ov 7406  df-oprab 7407  df-mpo 7408  df-om 7860  df-1st 7986  df-2nd 7987  df-1o 8478  df-map 8840  df-en 8958  df-dom 8959  df-fin 8961  df-fi 9421  df-rest 17434  df-topgen 17455  df-top 22830  df-topon 22847  df-bases 22882  df-cn 23163  df-cmp 23323  df-kgen 23470

This theorem is referenced by: (None)