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| Mirrors > Home > ILE Home > Th. List > cnf | GIF version | ||
| Description: A continuous function is a mapping. (Contributed by FL, 8-Dec-2006.) (Revised by Mario Carneiro, 21-Aug-2015.) |
| Ref | Expression |
|---|---|
| iscnp2.1 | ⊢ 𝑋 = ∪ 𝐽 |
| iscnp2.2 | ⊢ 𝑌 = ∪ 𝐾 |
| Ref | Expression |
|---|---|
| cnf | ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹:𝑋⟶𝑌) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iscnp2.1 | . . . 4 ⊢ 𝑋 = ∪ 𝐽 | |
| 2 | iscnp2.2 | . . . 4 ⊢ 𝑌 = ∪ 𝐾 | |
| 3 | 1, 2 | iscn2 14890 | . . 3 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) ↔ ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝐾 (◡𝐹 “ 𝑥) ∈ 𝐽))) |
| 4 | 3 | simprbi 275 | . 2 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → (𝐹:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝐾 (◡𝐹 “ 𝑥) ∈ 𝐽)) |
| 5 | 4 | simpld 112 | 1 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹:𝑋⟶𝑌) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1395 ∈ wcel 2200 ∀wral 2508 ∪ cuni 3888 ◡ccnv 4718 “ cima 4722 ⟶wf 5314 (class class class)co 6007 Topctop 14687 Cn ccn 14875 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4384 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-res 4731 df-ima 4732 df-iota 5278 df-fun 5320 df-fn 5321 df-f 5322 df-fv 5326 df-ov 6010 df-oprab 6011 df-mpo 6012 df-1st 6292 df-2nd 6293 df-map 6805 df-top 14688 df-topon 14701 df-cn 14878 |
| This theorem is referenced by: cnco 14911 cnclima 14913 cnntri 14914 cnss1 14916 cnss2 14917 cncnpi 14918 cncnp2m 14921 cnrest 14925 cnrest2 14926 txcnmpt 14963 uptx 14964 txcn 14965 cnmpt11f 14974 cnmpt21f 14982 hmeocnv 14997 hmeores 15005 txhmeo 15009 |
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