⪰
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⪰
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.- 1990, Charalambos D. Aliprantis, Donald J. Brown, Owen Burkinshaw, “Chapter 1”, in Existence and Optimality of Competitive Equilibria (in English), Springer Berlin Heidelberg, →ISBN, pages 58–59:
- A preference ⪰ defined on a topological space X is said to be: / […] 2) non-satiated, whenever for each x ∈ X there exists some z ∈ X such that z ⪰ x. […] For each i there exists (by the non-satiatedness) some zi ∈ E+ such that zi ⪰i xi.
- 2002, Hans Föllmer, Alexander Schied, Stochastic Finance: An Introduction in Discrete Time (in English), Walter de Gruyter, →ISBN, page 57:
- Definition 2.2. A preference order ≻ on 𝒳 induces a corresponding weak preference order ⪰ defined by / x ⪰ y : ⟺ y ⊁ x, / and an indifference relation ⁓ given by / x ⁓ y : ⟺ x ⪰ y and y ⪰ x. / Thus, x ⪰ y means that either x is preferred to y or there is no clear preference between the two.
- 2014 June 18, Companion to Intrinsic Properties (in English), De Gruyter, →ISBN, page 277:
- Following Krantz et al. (1971) there are two primitive predicatives: greater than or equal to (⪰) and concatenation (◦). To say that x ⪰ y means, intuitively that the length of x is greater than or equal to the length of y.
- 2015, Jeffrey W. Herrmann, “DECISION-MAKING FUNDAMENTALS”, in Engineering Decision Making and Risk Management (in English), Wiley, →ISBN, RATIONALITY, page 26:
- Let A ⪰ B denote the fact that the decision maker prefers alternative A over alternative B or views them as equivalent. Then, certain properties must hold: reflexivity is the property that A ⪰ A. The property of antisymmetry states that if A ⪰ B and B ⪰ A, then A = B (that is, the decision maker has no preference; they are equivalent).