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proper subset

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
proper subset [′präp·ər ′səb‚set]
(mathematics)
A setXis a proper subset of a setYif there is an element ofYwhich is not inXwhileXis a subset ofY.
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i])- regularly open proper subset [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].
Some properties on generalizations of Lindelof spaces in ... by Kavikumar, J.; Md Raji, Abd Wahid; Khamis, Azme / Advances in Theoretical and Applied Mathematics
1) above): (9) the members of each collection include those of the next as the proper subset (with soldier Brown representing a limiting case of a subset, though not of a collection, since the latter has two members as its limiting case).
On partonomy and taxonomy by Gorska, Elzbieta / Studia Anglica Posnaniensia: international review of English Studies
A is a proper subset if all of its elements are also elements of B but not all the elements of B are contained in A (Figure 1b).
A mathematical approach to understanding the diversity of ethical ... by Callahan, Anita / Industrial Management
 
 
 
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