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| Mirrors > Home > MPE Home > Th. List > elind | Structured version Visualization version Unicode version | ||
| Description: Deduce membership in an intersection of two classes. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
| Ref | Expression |
|---|---|
| elind.1 |
|
| elind.2 |
|
| Ref | Expression |
|---|---|
| elind |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elind.1 |
. 2
| |
| 2 | elind.2 |
. 2
| |
| 3 | elin 3796 |
. 2
| |
| 4 | 1, 2, 3 | sylanbrc 698 |
1
|
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