00764nam a22001697a 4500040003600000082001600036100002700052245006200079260003500141300003700176500015400213500004000367500004100407502006100448546001200509650007300521  cRiphah International University  a513.83bKIRi aKiran Shehzadi (26406)  aTopological structures of rough sets based on hyperrings   aIslamabadb(unpublished)c2021  axii, 30 p.b: ill.c; 30 cme+CD  aSubmitted in fulfilment of the requirements for the degree of Master of Philosophy in Mathematics to the Department of Basic Sciences and Humanities.  aIncludes bibliographical references  aThesis supervisor: Dr. Naveed Yaqoob  aThesis (M.Phil.)--Riphah International University, 2021.  aEnglish  aTopologyvHypestructure vHyperringsvHyperidealvHypergroupoidvDBS