Let X={a,b,c,d,e,f},and let R={(a,b),(a,d),(e,e),(c,f)}.How to make a reflexive relation ,a symmetric relation, and transitive relation. To show your suggestions by the directed graph.


麻煩各位了.....
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2002-10-23 21:10
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Let X={a,b,c,d,e,f},and let R={(a,b),(a,d),(e,e),(c,f)}.How to make a reflexive relation ,a symmetric relation, and transitive relation. To show your suggestions by the directed graph.


麻煩各位了.....


容我發問：這些關係應是建立於某個集合或一些集合上，或某一個對象，我不清楚你所考慮？
是在那裡建立這一些關系？ Set X, or R ?