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  2. Ordered pair - Wikipedia

    en.wikipedia.org/wiki/Ordered_pair

    Ordered pair. Analytic geometry associates to each point in the Euclidean plane an ordered pair. The red ellipse is associated with the set of all pairs ( x, y) such that ⁠x2 4 ⁠ + y2 = 1. In mathematics, an ordered pair ( a, b) is a pair of objects. The order in which the objects appear in the pair is significant: the ordered pair ( a, b ...

  3. Saddle point - Wikipedia

    en.wikipedia.org/wiki/Saddle_point

    Saddle point. In mathematics, a saddle point or minimax point [1] is a point on the surface of the graph of a function where the slopes (derivatives) in orthogonal directions are all zero (a critical point ), but which is not a local extremum of the function. [2] An example of a saddle point is when there is a critical point with a relative ...

  4. Fixed point (mathematics) - Wikipedia

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

    Fixed point (mathematics) A function with three fixed points. In mathematics, a fixed point (sometimes shortened to fixpoint ), also known as an invariant point, is a value that does not change under a given transformation. Specifically, for functions, a fixed point is an element that is mapped to itself by the function.

  5. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

  6. Knee of a curve - Wikipedia

    en.wikipedia.org/wiki/Knee_of_a_curve

    In mathematics, a knee of a curve (or elbow of a curve) is a point where the curve visibly bends, specifically from high slope to low slope (flat or close to flat), or in the other direction. This is particularly used in optimization, where a knee point is the optimum point for some decision, for example when there is an increasing function and ...

  7. Fixed-point arithmetic - Wikipedia

    en.wikipedia.org/wiki/Fixed-point_arithmetic

    Fixed-point arithmetic. In computing, fixed-point is a method of representing fractional (non-integer) numbers by storing a fixed number of digits of their fractional part. Dollar amounts, for example, are often stored with exactly two fractional digits, representing the cents (1/100 of dollar). More generally, the term may refer to ...

  8. Elbow method (clustering) - Wikipedia

    en.wikipedia.org/wiki/Elbow_method_(clustering)

    In cluster analysis, the elbow method is a heuristic used in determining the number of clusters in a data set. The method consists of plotting the explained variation as a function of the number of clusters and picking the elbow of the curve as the number of clusters to use. The same method can be used to choose the number of parameters in ...

  9. Buzzword of the Week: Bringing the 'Pain Point' - AOL

    www.aol.com/news/2011-03-14-buzzword-of-the-week...

    More accurately defined as "pinch point" or limiting factor, this version of pain point is a key factor or problem that limits the development or expansion of a program. Recently, Ross Hudgens ...

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