Korean Journal of Mathematics

The Kangwon-Kyungki Mathematical Society (강원경기수학회)
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THE PROPERTIES OF ROUGH APPROXIMATIONS

  • Kim, Yong Chan (Department of Mathematics, Natural Science Gangneung-Wonju National University) ;
  • Ko, Jung Mi (Department of Mathematics, Natural Science Gangneung-Wonju National University)
  • Received : 2011.03.17
  • Accepted : 2011.06.17
  • Published : 2011.06.30
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Abstract

We investigated the properties of rough approximations induced by two families of preordered sets and closure systems. We study the relations among the lower and upper rough approximations, closure and interior systems, preordered sets.

Keywords

References

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