Notes on ``The lower and upper approximations in a fuzzy group'' and ``Rough ideals in semigroups''. (Q2456481)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Notes on ``The lower and upper approximations in a fuzzy group'' and ``Rough ideals in semigroups''. |
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Notes on ``The lower and upper approximations in a fuzzy group'' and ``Rough ideals in semigroups''. (English)
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18 October 2007
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rough subgroups
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upper approximations
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level subsets
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fuzzy normal subgroups
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rough sets
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fuzzy congruences
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rough left ideals
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