全序╱total ordering
╱🚧 under construction
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╱🚧 under construction
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⟩ ⟩ ⟩ total ordering╱linear ordering
An total/linear ordering on a set F is a relation (represented by ≤) with the following 3 properties:
(TO1) 全序性╱:x ≤ y or y ≤ x, ∀ x, y ∈ F
(TO2) 反對稱╱:x ≤ y, y ≤ x => x = y
(TO3) 遞移性╱:x ≤ y, y ≤ z => x ≤ z
「全序性」() 必具有「反身性」():
換句話說,一個 total order 也一定是個 partial order。