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| Mirrors > Home > MPE Home > Th. List > 0xr | Structured version Visualization version Unicode version | ||
| Description: Zero is an extended real. (Contributed by Mario Carneiro, 15-Jun-2014.) |
| Ref | Expression |
|---|---|
| 0xr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressxr 10083 |
. 2
| |
| 2 | 0re 10040 |
. 2
| |
| 3 | 1, 2 | sselii 3600 |
1
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