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Mirrors > Home > MPE Home > Th. List > elfzoelz | Structured version Visualization version Unicode version |
Description: Reverse closure for half-open integer sets. (Contributed by Stefan O'Rear, 14-Aug-2015.) |
Ref | Expression |
---|---|
elfzoelz | ..^ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzoel1 12468 | . . . 4 ..^ | |
2 | elfzoel2 12469 | . . . 4 ..^ | |
3 | fzof 12467 | . . . . 5 ..^ | |
4 | 3 | fovcl 6765 | . . . 4 ..^ |
5 | 1, 2, 4 | syl2anc 693 | . . 3 ..^ ..^ |
6 | 5 | elpwid 4170 | . 2 ..^ ..^ |
7 | id 22 | . 2 ..^ ..^ | |
8 | 6, 7 | sseldd 3604 | 1 ..^ |
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