几个关系

Word count: 64 | Reading time≈ 1 min

恒等关系I instant,主元素和副元素相同的关系

等价关系,同时满足自反传递对称的关系

自反:r(A) reflexive

对称:s(A) symmetric

传递:t(A) transferergodic

全域关系:经由cluster ergodic而形成的关系

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