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  2. Set-builder notation - Wikipedia

    en.wikipedia.org/wiki/Set-builder_notation

    Set-builder notation can be used to describe a set that is defined by a predicate, that is, a logical formula that evaluates to true for an element of the set, and false otherwise. [2] In this form, set-builder notation has three parts: a variable, a colon or vertical bar separator, and a predicate. Thus there is a variable on the left of the ...

  3. Set (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Set_(mathematics)

    A set of polygons in an Euler diagram This set equals the one depicted above since both have the very same elements.. In mathematics, a set is a collection of different [1] things; [2] [3] [4] these things are called elements or members of the set and are typically mathematical objects of any kind: numbers, symbols, points in space, lines, other geometrical shapes, variables, or even other ...

  4. Union (set theory) - Wikipedia

    en.wikipedia.org/wiki/Union_(set_theory)

    In the case that the index set I is the set of natural numbers, one uses the notation =, which is analogous to that of the infinite sums in series. [11] When the symbol "∪" is placed before other symbols (instead of between them), it is usually rendered as a larger size.

  5. European Authorized Representative - Wikipedia

    en.wikipedia.org/wiki/European_Authorized...

    An authorised representative may also carry out a conformity assessment of a medical device on behalf of the manufacturer. [7] European ‘Blue Guide" [8] describes that delegation of an authorised representative should be set out in writing (as an agreement, mandate, or power of attorney) to define contents and limits of tasks. The copy of the ...

  6. Set theory - Wikipedia

    en.wikipedia.org/wiki/Set_theory

    For instance, for the sets {1, 2, 3} and {2, 3, 4}, the symmetric difference set is {1, 4}. It is the set difference of the union and the intersection, (A ∪ B) \ (A ∩ B) or (A \ B) ∪ (B \ A). Cartesian product of A and B, denoted A × B, is the set whose members are all possible ordered pairs (a, b), where a is a member of A and b is a ...

  7. Power set - Wikipedia

    en.wikipedia.org/wiki/Power_set

    In set theory, X Y is the notation representing the set of all functions from Y to X. As "2" can be defined as {0, 1} (see, for example, von Neumann ordinals), 2 S (i.e., {0, 1} S) is the set of all functions from S to {0, 1}. As shown above, 2 S and the power set of S, P (S), are considered identical set-theoretically.

  8. Talk:Set-builder notation - Wikipedia

    en.wikipedia.org/wiki/Talk:Set-builder_notation

    But the set builder notation is a notation commonly used for both sorts of specifications, and, for many sources the use of braces for specifications by extension is a part of set builder notation. I agree that it is possible to consider that Roster notation is not a special case of set builder notation, but, as for most conventions, this is an ...

  9. Wikipedia:Reference desk/Archives/Mathematics/2009 September ...

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

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