Clopen
This disambiguation page lists articles associated with the title Clopen.
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Clopen is usually encountered as a portmanteau of closed and open. It may refer to:
- a clopen set as in topology (a branch of mathematics)
- a term used by workers in retail and service jobs when then have to close one night, and open the following day. This term can be used either as a noun ("my schedule has a clopen this week"), or as a verb ("looks like I have to clopen")