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Mirrors > Home > MPE Home > Th. List > idcn | Structured version Visualization version GIF version |
Description: A restricted identity function is a continuous function. (Contributed by FL, 27-Dec-2006.) (Proof shortened by Mario Carneiro, 21-Mar-2015.) |
Ref | Expression |
---|---|
idcn | ⊢ (𝐽 ∈ (TopOn‘𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssid 3948 | . 2 ⊢ 𝐽 ⊆ 𝐽 | |
2 | ssidcn 22455 | . . 3 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐽 ∈ (TopOn‘𝑋)) → (( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽) ↔ 𝐽 ⊆ 𝐽)) | |
3 | 2 | anidms 568 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) → (( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽) ↔ 𝐽 ⊆ 𝐽)) |
4 | 1, 3 | mpbiri 258 | 1 ⊢ (𝐽 ∈ (TopOn‘𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∈ wcel 2104 ⊆ wss 3892 I cid 5499 ↾ cres 5602 ‘cfv 6458 (class class class)co 7307 TopOnctopon 22108 Cn ccn 22424 |
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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3306 df-v 3439 df-sbc 3722 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-br 5082 df-opab 5144 df-mpt 5165 df-id 5500 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-ov 7310 df-oprab 7311 df-mpo 7312 df-map 8648 df-top 22092 df-topon 22109 df-cn 22427 |
This theorem is referenced by: resthauslem 22563 kgencn2 22757 txkgen 22852 cnmptid 22861 idhmeo 22973 qtophmeo 23017 pl1cn 31954 rrhre 32020 |
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