A choice set is a finite collection of available options selected from a larger theoretical decision space. For example, a consumer has thousands of conceivable...

propensity to purchase a product from a larger choice set compared to a smaller one. Currently, the effect of choice set size on the probability of a purchase...

theory of sets free of paradoxes such as Russell's paradox. Today, Zermelo–Fraenkel set theory, with the historically controversial axiom of choice (AC) included...

of choice, abbreviated AC or AoC, is an axiom of set theory. Informally put, the axiom of choice says that given any collection of non-empty sets, it...

Neumann–Bernays–Gödel set theory (NBG) is an axiomatic set theory that is a conservative extension of Zermelo–Fraenkel–choice set theory (ZFC). NBG introduces...

potentially dissatisfaction with their choice. Although larger choice sets can be initially appealing, smaller choice sets lead to increased satisfaction and...

theory (that is, of Zermelo–Fraenkel set theory with the axiom of choice excluded), and also that the axiom of choice and the generalized continuum hypothesis...

analysis of discrete choice. Discrete choice models theoretically or empirically model choices made by people among a finite set of alternatives. The...

The Paradox of Choice – Why More Is Less is a book written by American psychologist Barry Schwartz and first published in 2004 by Harper Perennial. In...

Somewhat formally, the "social choice" in the title refers to Arrow's representation of how social values from the set of individual orderings would be...

choice for an election outcome. An alternative, stricter criterion is given by the Landau set. The Smith set is formally defined as the smallest set such...

of which Zermelo–Fraenkel set theory (with or without the axiom of choice) is still the best-known and most studied. Set theory is commonly employed...

such sets. Each Vitali set is uncountable, and there are uncountably many Vitali sets. The proof of their existence depends on the axiom of choice. Certain...

Rational choice modeling refers to the use of decision theory (the theory of rational choice) as a set of guidelines to help understand economic and social...

dividing them into those that structure the choice set and those that describe the choice. Examples of choice set structuring include: the number of alternatives...

The theory of consumer choice is the branch of microeconomics that relates preferences to consumption expenditures and to consumer demand curves. It analyzes...

consumer choice data in his/her hand and tries to construct a choice model and simulate it against the data, he/she needs to first define a choice set. A Choice...

Let X be a set of sets none of which are empty. Then a choice function (selector, selection) on X is a mathematical function f that is defined on X such...

countable choice, a set is countable if its cardinality (the number of elements of the set) is not greater than that of the natural numbers. A countable set that...

product is a nonempty set is insured by the axiom of choice. Given two sets ⁠ E {\displaystyle E} ⁠ and ⁠ F {\displaystyle F} ⁠, the set exponentiation, denoted...

with multi-winner districts; often called "proportional ranked choice voting" This set index article includes a list of related items that share the same...

\partial g/\partial \alpha _{k}} . Let X {\displaystyle X} denote the choice set and let the relevant parameter be t ∈ [ 0 , 1 ] {\displaystyle t\in \lbrack...

Zermelo–Fraenkel set theory without the axiom of choice, but the equivalence of the third and fourth cannot be proved without additional choice principles....

another alternative is added to the choice set. The new alternative should reduce, or at best leave unchanged, the choice share of existing alternatives....

but lower quality. Suppose in a binary choice, X is chosen more frequently than Y. Next suppose a new choice set is formed by adding an option S that is...

Zermelo–Fraenkel set theory without the axiom of choice (ZF), the following conditions are all equivalent: S {\displaystyle S} is a finite set. That is, S...

Multiple choice (MC), objective response or MCQ (for multiple choice question) is a form of an objective assessment in which respondents are asked to...

axiom of choice, exploring alternative set theories where the axiom does not hold. choice set A set constructed from a collection of non-empty sets by selecting...

The People's Choice Awards is an American awards show, recognizing people in entertainment, voted online by the fans and general public. The show has been...

the axiom of global choice is a stronger variant of the axiom of choice that applies to proper classes of sets as well as sets of sets. Informally it states...