cnllysconn - Mathbox for Mario Carneiro

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Theorem cnllysconn 32778

Description: The topology of the complex numbers is locally simply connected. (Contributed by Mario Carneiro, 2-Mar-2015.)

**Hypothesis**
Ref	Expression
cnllysconn.j	⊢ 𝐽 = (TopOpen‘ℂ_fld)

**Assertion**
Ref	Expression
cnllysconn	⊢ 𝐽 ∈ Locally SConn

Proof of Theorem cnllysconn Dummy variables 𝑢 𝑟 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cnllysconn.j	. . 3 ⊢ 𝐽 = (TopOpen‘ℂ_fld)
2	1	cnfldtop 23536	. 2 ⊢ 𝐽 ∈ Top
3		cnxmet 23525	. . . . 5 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
4	1	cnfldtopn 23534	. . . . . 6 ⊢ 𝐽 = (MetOpen‘(abs ∘ − ))
5	4	mopni2 23246	. . . . 5 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) → ∃𝑟 ∈ ℝ⁺ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
6	3, 5	mp3an1 1449	. . . 4 ⊢ ((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) → ∃𝑟 ∈ ℝ⁺ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
7	3	a1i 11	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (abs ∘ − ) ∈ (∞Met‘ℂ))
8	1	cnfldtopon 23535	. . . . . . . . 9 ⊢ 𝐽 ∈ (TopOn‘ℂ)
9		simpll 767	. . . . . . . . 9 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑥 ∈ 𝐽)
10		toponss 21678	. . . . . . . . 9 ⊢ ((𝐽 ∈ (TopOn‘ℂ) ∧ 𝑥 ∈ 𝐽) → 𝑥 ⊆ ℂ)
11	8, 9, 10	sylancr 590	. . . . . . . 8 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑥 ⊆ ℂ)
12		simplr 769	. . . . . . . 8 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦 ∈ 𝑥)
13	11, 12	sseldd 3878	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦 ∈ ℂ)
14		rpxr 12481	. . . . . . . 8 ⊢ (𝑟 ∈ ℝ⁺ → 𝑟 ∈ ℝ^*)
15	14	ad2antrl 728	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑟 ∈ ℝ^*)
16	4	blopn 23253	. . . . . . 7 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ 𝑟 ∈ ℝ^*) → (𝑦(ball‘(abs ∘ − ))𝑟) ∈ 𝐽)
17	7, 13, 15, 16	syl3anc 1372	. . . . . 6 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))𝑟) ∈ 𝐽)
18		simprr 773	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
19		vex 3402	. . . . . . . 8 ⊢ 𝑥 ∈ V
20	19	elpw2 5213	. . . . . . 7 ⊢ ((𝑦(ball‘(abs ∘ − ))𝑟) ∈ 𝒫 𝑥 ↔ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
21	18, 20	sylibr 237	. . . . . 6 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))𝑟) ∈ 𝒫 𝑥)
22	17, 21	elind 4084	. . . . 5 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))𝑟) ∈ (𝐽 ∩ 𝒫 𝑥))
23		simprl 771	. . . . . 6 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑟 ∈ ℝ⁺)
24		blcntr 23166	. . . . . 6 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ 𝑟 ∈ ℝ⁺) → 𝑦 ∈ (𝑦(ball‘(abs ∘ − ))𝑟))
25	7, 13, 23, 24	syl3anc 1372	. . . . 5 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦 ∈ (𝑦(ball‘(abs ∘ − ))𝑟))
26		eqid 2738	. . . . . . 7 ⊢ (𝑦(ball‘(abs ∘ − ))𝑟) = (𝑦(ball‘(abs ∘ − ))𝑟)
27		eqid 2738	. . . . . . 7 ⊢ (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) = (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟))
28	1, 26, 27	blsconn 32777	. . . . . 6 ⊢ ((𝑦 ∈ ℂ ∧ 𝑟 ∈ ℝ^*) → (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) ∈ SConn)
29	13, 15, 28	syl2anc 587	. . . . 5 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) ∈ SConn)
30		eleq2 2821	. . . . . . 7 ⊢ (𝑢 = (𝑦(ball‘(abs ∘ − ))𝑟) → (𝑦 ∈ 𝑢 ↔ 𝑦 ∈ (𝑦(ball‘(abs ∘ − ))𝑟)))
31		oveq2 7178	. . . . . . . 8 ⊢ (𝑢 = (𝑦(ball‘(abs ∘ − ))𝑟) → (𝐽 ↾_t 𝑢) = (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)))
32	31	eleq1d 2817	. . . . . . 7 ⊢ (𝑢 = (𝑦(ball‘(abs ∘ − ))𝑟) → ((𝐽 ↾_t 𝑢) ∈ SConn ↔ (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) ∈ SConn))
33	30, 32	anbi12d 634	. . . . . 6 ⊢ (𝑢 = (𝑦(ball‘(abs ∘ − ))𝑟) → ((𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn) ↔ (𝑦 ∈ (𝑦(ball‘(abs ∘ − ))𝑟) ∧ (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) ∈ SConn)))
34	33	rspcev 3526	. . . . 5 ⊢ (((𝑦(ball‘(abs ∘ − ))𝑟) ∈ (𝐽 ∩ 𝒫 𝑥) ∧ (𝑦 ∈ (𝑦(ball‘(abs ∘ − ))𝑟) ∧ (𝐽 ↾_t (𝑦(ball‘(abs ∘ − ))𝑟)) ∈ SConn)) → ∃𝑢 ∈ (𝐽 ∩ 𝒫 𝑥)(𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn))
35	22, 25, 29, 34	syl12anc 836	. . . 4 ⊢ (((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) ∧ (𝑟 ∈ ℝ⁺ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∃𝑢 ∈ (𝐽 ∩ 𝒫 𝑥)(𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn))
36	6, 35	rexlimddv 3201	. . 3 ⊢ ((𝑥 ∈ 𝐽 ∧ 𝑦 ∈ 𝑥) → ∃𝑢 ∈ (𝐽 ∩ 𝒫 𝑥)(𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn))
37	36	rgen2 3115	. 2 ⊢ ∀𝑥 ∈ 𝐽 ∀𝑦 ∈ 𝑥 ∃𝑢 ∈ (𝐽 ∩ 𝒫 𝑥)(𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn)
38		islly 22219	. 2 ⊢ (𝐽 ∈ Locally SConn ↔ (𝐽 ∈ Top ∧ ∀𝑥 ∈ 𝐽 ∀𝑦 ∈ 𝑥 ∃𝑢 ∈ (𝐽 ∩ 𝒫 𝑥)(𝑦 ∈ 𝑢 ∧ (𝐽 ↾_t 𝑢) ∈ SConn)))
39	2, 37, 38	mpbir2an 711	1 ⊢ 𝐽 ∈ Locally SConn

Colors of variables: wff setvar class

Syntax hints: ∧ wa 399 = wceq 1542 ∈ wcel 2114 ∀wral 3053 ∃wrex 3054 ∩ cin 3842 ⊆ wss 3843 𝒫 cpw 4488 ∘ ccom 5529 ‘cfv 6339 (class class class)co 7170 ℂcc 10613 ℝ^*cxr 10752 − cmin 10948 ℝ⁺crp 12472 abscabs 14683 ↾_t crest 16797 TopOpenctopn 16798 ∞Metcxmet 20202 ballcbl 20204 ℂ_fldccnfld 20217 Topctop 21644 TopOnctopon 21661 Locally clly 22215 SConncsconn 32753

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2710 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7479 ax-cnex 10671 ax-resscn 10672 ax-1cn 10673 ax-icn 10674 ax-addcl 10675 ax-addrcl 10676 ax-mulcl 10677 ax-mulrcl 10678 ax-mulcom 10679 ax-addass 10680 ax-mulass 10681 ax-distr 10682 ax-i2m1 10683 ax-1ne0 10684 ax-1rid 10685 ax-rnegex 10686 ax-rrecex 10687 ax-cnre 10688 ax-pre-lttri 10689 ax-pre-lttrn 10690 ax-pre-ltadd 10691 ax-pre-mulgt0 10692 ax-pre-sup 10693 ax-addf 10694 ax-mulf 10695

This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rmo 3061 df-rab 3062 df-v 3400 df-sbc 3681 df-csb 3791 df-dif 3846 df-un 3848 df-in 3850 df-ss 3860 df-pss 3862 df-nul 4212 df-if 4415 df-pw 4490 df-sn 4517 df-pr 4519 df-tp 4521 df-op 4523 df-uni 4797 df-int 4837 df-iun 4883 df-iin 4884 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5429 df-eprel 5434 df-po 5442 df-so 5443 df-fr 5483 df-se 5484 df-we 5485 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6297 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-isom 6348 df-riota 7127 df-ov 7173 df-oprab 7174 df-mpo 7175 df-of 7425 df-om 7600 df-1st 7714 df-2nd 7715 df-supp 7857 df-wrecs 7976 df-recs 8037 df-rdg 8075 df-1o 8131 df-2o 8132 df-er 8320 df-map 8439 df-ixp 8508 df-en 8556 df-dom 8557 df-sdom 8558 df-fin 8559 df-fsupp 8907 df-fi 8948 df-sup 8979 df-inf 8980 df-oi 9047 df-card 9441 df-pnf 10755 df-mnf 10756 df-xr 10757 df-ltxr 10758 df-le 10759 df-sub 10950 df-neg 10951 df-div 11376 df-nn 11717 df-2 11779 df-3 11780 df-4 11781 df-5 11782 df-6 11783 df-7 11784 df-8 11785 df-9 11786 df-n0 11977 df-z 12063 df-dec 12180 df-uz 12325 df-q 12431 df-rp 12473 df-xneg 12590 df-xadd 12591 df-xmul 12592 df-icc 12828 df-fz 12982 df-fzo 13125 df-seq 13461 df-exp 13522 df-hash 13783 df-cj 14548 df-re 14549 df-im 14550 df-sqrt 14684 df-abs 14685 df-struct 16588 df-ndx 16589 df-slot 16590 df-base 16592 df-sets 16593 df-ress 16594 df-plusg 16681 df-mulr 16682 df-starv 16683 df-sca 16684 df-vsca 16685 df-ip 16686 df-tset 16687 df-ple 16688 df-ds 16690 df-unif 16691 df-hom 16692 df-cco 16693 df-rest 16799 df-topn 16800 df-0g 16818 df-gsum 16819 df-topgen 16820 df-pt 16821 df-prds 16824 df-xrs 16878 df-qtop 16883 df-imas 16884 df-xps 16886 df-mre 16960 df-mrc 16961 df-acs 16963 df-mgm 17968 df-sgrp 18017 df-mnd 18028 df-submnd 18073 df-mulg 18343 df-cntz 18565 df-cmn 19026 df-psmet 20209 df-xmet 20210 df-met 20211 df-bl 20212 df-mopn 20213 df-cnfld 20218 df-top 21645 df-topon 21662 df-topsp 21684 df-bases 21697 df-cn 21978 df-cnp 21979 df-lly 22217 df-tx 22313 df-hmeo 22506 df-xms 23073 df-ms 23074 df-tms 23075 df-ii 23629 df-htpy 23722 df-phtpy 23723 df-phtpc 23744 df-pconn 32754 df-sconn 32755

This theorem is referenced by: (None)

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