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Mirrors > Home > MPE Home > Th. List > conntop | Structured version Visualization version GIF version |
Description: A connected topology is a topology. (Contributed by FL, 22-Dec-2008.) (Revised by Mario Carneiro, 14-Dec-2013.) |
Ref | Expression |
---|---|
conntop | ⊢ (𝐽 ∈ Conn → 𝐽 ∈ Top) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2798 | . . 3 ⊢ ∪ 𝐽 = ∪ 𝐽 | |
2 | 1 | isconn 22018 | . 2 ⊢ (𝐽 ∈ Conn ↔ (𝐽 ∈ Top ∧ (𝐽 ∩ (Clsd‘𝐽)) = {∅, ∪ 𝐽})) |
3 | 2 | simplbi 501 | 1 ⊢ (𝐽 ∈ Conn → 𝐽 ∈ Top) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 ∩ cin 3880 ∅c0 4243 {cpr 4527 ∪ cuni 4800 ‘cfv 6324 Topctop 21498 Clsdccld 21621 Conncconn 22016 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-rab 3115 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-iota 6283 df-fv 6332 df-conn 22017 |
This theorem is referenced by: conncompss 22038 txconn 22294 qtopconn 22314 ufildr 22536 connpconn 32595 cvmliftmolem1 32641 cvmliftmolem2 32642 ordtopconn 33900 |
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