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Related theorems Unicode version |
| Description: A singleton of a set belongs to the power class of a class containing the set. |
| Ref | Expression |
|---|---|
| snelpw.1 |
|
| Ref | Expression |
|---|---|
| snelpw |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snelpw.1 |
. . 3
| |
| 2 | 1 | snss 2525 |
. 2
|
| 3 | snex 2826 |
. . 3
| |
| 4 | 3 | elpw 2461 |
. 2
|
| 5 | 2, 4 | bitr4i 174 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: unipw 2836 canth2 4629 abfi 10737 nsn 11017 dtt2 11110 locfindsc 11576 snelpwi 12208 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-10 1002 ax-11 1003 ax-12 1004 ax-13 1005 ax-14 1006 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 ax-sep 2777 ax-pow 2818 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-ex 1017 df-sb 1209 df-eu 1421 df-mo 1422 df-clab 1506 df-cleq 1511 df-clel 1514 df-ne 1630 df-v 1858 df-dif 2101 df-in 2103 df-ss 2105 df-nul 2333 df-pw 2459 df-sn 2470 |