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出典:『Wiktionary』 (2025/11/19 18:07 UTC 版)

partially ordered set (plural partially ordered sets)

(set theory, order theory, loosely) A set that has a given, elsewhere specified partial order.
(set theory, order theory, formally) The ordered pair comprising a set and its partial order.
- 1959 [D. Van Nostrand], Edward James McShane, Truman Arthur Botts, Real Analysis, 2005, Dover, page 28,
  
  A partially ordered set means a pair ${\\displaystyle (P,\\succ )}$ consisting of a set ${\\displaystyle P}$ and a partial order ${\\displaystyle \\succ }$ in ${\\displaystyle P}$ . As usual, when the meaning is clear, we may suppress the notation of " ${\\displaystyle \\succ }$ " and speak of the partially ordered set ${\\displaystyle P}$ .
  
  The ordered fields defined earlier are easily seen to be examples of partially ordered sets.
- 1994, I. V. Evstigneev, P. E. Greenwood, Markov Fields over Countable Partially Ordered Sets: Extrema and Splitting, American Mathematical Society, page 35:
  
  In sections 7-10 we shall consider random fields over some subsets T of the partially ordered set T_M.
- 2000, David Arnold, Abelian Groups and Representations of Finite Partially Ordered Sets, Springer, page 45:
  
  The invention of a derivative of a finite partially ordered set by Nazarova and Roiter in the late 1960s or early 1970s was a seminal event in the subject of representations of finite partially ordered sets (see [Simson 92]).

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