🔰二元關係屬性

集合關係二元 ⟩ 性質

二元關係性質
  • 反身性╱reflexivitya  a, aAa \ {\color{orange}\mapsto} \ a, \ \forall a \in A

  • 對稱性╱symmetrya  b    b  aa \ {\color{orange}\mapsto} \ b \implies b \ {\color{orange}\mapsto} \ a

  • 反對稱╱antisymmetrya  b, b  a    a=ba \ {\color{orange}\mapsto} \ b, \ b \ {\color{orange}\mapsto} \ a \implies a = b

  • 遞移性╱transitivitya  b, b  c    a  ca \ {\color{orange}\mapsto} \ b, \ b \ {\color{orange}\mapsto} \ c \implies a \ {\color{orange}\mapsto} \ c

  • 全序性╱totalitya  b  or  b  a ( a,bA )a \ {\color{orange}\mapsto} \ b \ \text{ or } \ b \ {\color{orange}\mapsto} \ a \ ( \ \forall a, b \in A \ )

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