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| Mirrors > Home > MPE Home > Th. List > elpwid | Structured version Visualization version Unicode version | ||
| Description: An element of a power class is a subclass. Deduction form of elpwi 4168. (Contributed by David Moews, 1-May-2017.) |
| Ref | Expression |
|---|---|
| elpwid.1 |
|
| Ref | Expression |
|---|---|
| elpwid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpwid.1 |
. 2
| |
| 2 | elpwi 4168 |
. 2
| |
| 3 | 1, 2 | syl 17 |
1
|
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