| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cnmptc | Structured version Visualization version GIF version | ||
| Description: A constant function is continuous. (Contributed by Mario Carneiro, 5-May-2014.) (Revised by Mario Carneiro, 22-Aug-2015.) |
| Ref | Expression |
|---|---|
| cnmptid.j | ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋)) |
| cnmptc.k | ⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑌)) |
| cnmptc.p | ⊢ (𝜑 → 𝑃 ∈ 𝑌) |
| Ref | Expression |
|---|---|
| cnmptc | ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ 𝑃) ∈ (𝐽 Cn 𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fconstmpt 5684 | . 2 ⊢ (𝑋 × {𝑃}) = (𝑥 ∈ 𝑋 ↦ 𝑃) | |
| 2 | cnmptid.j | . . 3 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋)) | |
| 3 | cnmptc.k | . . 3 ⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑌)) | |
| 4 | cnmptc.p | . . 3 ⊢ (𝜑 → 𝑃 ∈ 𝑌) | |
| 5 | cnconst2 23225 | . . 3 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌) ∧ 𝑃 ∈ 𝑌) → (𝑋 × {𝑃}) ∈ (𝐽 Cn 𝐾)) | |
| 6 | 2, 3, 4, 5 | syl3anc 1373 | . 2 ⊢ (𝜑 → (𝑋 × {𝑃}) ∈ (𝐽 Cn 𝐾)) |
| 7 | 1, 6 | eqeltrrid 2839 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ 𝑃) ∈ (𝐽 Cn 𝐾)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 {csn 4578 ↦ cmpt 5177 × cxp 5620 ‘cfv 6490 (class class class)co 7356 TopOnctopon 22852 Cn ccn 23166 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-fv 6498 df-ov 7359 df-oprab 7360 df-mpo 7361 df-1st 7931 df-2nd 7932 df-map 8763 df-topgen 17361 df-top 22836 df-topon 22853 df-cn 23169 df-cnp 23170 |
| This theorem is referenced by: cnmpt2c 23612 xkoinjcn 23629 txconn 23631 imasnopn 23632 imasncld 23633 imasncls 23634 istgp2 24033 tmdmulg 24034 tmdgsum 24037 tmdlactcn 24044 clsnsg 24052 tgpt0 24061 tlmtgp 24138 nmcn 24787 fsumcn 24815 expcn 24817 divccn 24818 expcnOLD 24819 divccnOLD 24820 cncfmptc 24859 cdivcncf 24868 iirevcn 24878 iihalf1cn 24880 iihalf1cnOLD 24881 iihalf2cn 24883 iihalf2cnOLD 24884 icchmeo 24892 icchmeoOLD 24893 evth 24912 evth2 24913 pcocn 24971 pcopt 24976 pcopt2 24977 pcoass 24978 csscld 25203 clsocv 25204 dvcnvlem 25934 plycn 26220 plycnOLD 26221 psercn2 26386 psercn2OLD 26387 resqrtcn 26713 sqrtcn 26714 atansopn 26896 efrlim 26933 efrlimOLD 26934 ipasslem7 30860 occllem 31327 rmulccn 34034 cxpcncf1 34701 txsconnlem 35383 cvxpconn 35385 cvmlift2lem2 35447 cvmlift2lem3 35448 cvmliftphtlem 35460 sinccvglem 35815 knoppcnlem10 36645 areacirclem2 37849 fprodcn 45788 |
| Copyright terms: Public domain | W3C validator |