Veldman, Wim <br/><br/>
On sets enclosed between a set and its double complement 

 - Nijmegen:  Department of Mathematics Catholic University,  1996. 
 - 14p.  ; 24cm. 
 - Report 9634 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Set theory<br/>Ordered sets
<br/><br/><label>LC Class. No.: </label>MATH QA3.R46 no.9634