Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > iooltub | Structured version Visualization version Unicode version |
Description: An element of an open interval is less than its upper bound. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
iooltub |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elioo2 12216 | . . 3 | |
2 | simp3 1063 | . . 3 | |
3 | 1, 2 | syl6bi 243 | . 2 |
4 | 3 | 3impia 1261 | 1 |
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