| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cls0 | Structured version Visualization version GIF version | ||
| Description: The closure of the empty set. (Contributed by NM, 2-Oct-2007.) (Proof shortened by Jim Kingdon, 12-Mar-2023.) |
| Ref | Expression |
|---|---|
| cls0 | ⊢ (𝐽 ∈ Top → ((cls‘𝐽)‘∅) = ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0cld 23156 | . 2 ⊢ (𝐽 ∈ Top → ∅ ∈ (Clsd‘𝐽)) | |
| 2 | cldcls 23160 | . 2 ⊢ (∅ ∈ (Clsd‘𝐽) → ((cls‘𝐽)‘∅) = ∅) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝐽 ∈ Top → ((cls‘𝐽)‘∅) = ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1563 ∈ wcel 2145 ∅c0 4288 ‘cfv 6525 Topctop 23011 Clsdccld 23134 clsccl 23136 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-rep 5232 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-int 4909 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-top 23012 df-cld 23137 df-cls 23139 |
| This theorem is referenced by: dfac14lem 23735 flimclslem 24102 |
| Copyright terms: Public domain | W3C validator |