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  2. Unit interval - Wikipedia

    en.wikipedia.org/wiki/Unit_interval

    Sometimes, the term "unit interval" is used to refer to objects that play a role in various branches of mathematics analogous to the role that [0,1] plays in homotopy theory. For example, in the theory of quivers , the (analogue of the) unit interval is the graph whose vertex set is { 0 , 1 } {\displaystyle \{0,1\}} and which contains a single ...

  3. Interval (mathematics) - Wikipedia

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

    The Encyclopedia of Mathematics [7] defines interval (without a qualifier) to exclude both endpoints (i.e., open interval) and segment to include both endpoints (i.e., closed interval), while Rudin's Principles of Mathematical Analysis [8] calls sets of the form [a, b] intervals and sets of the form (a, b) segments throughout.

  4. Unit interval (data transmission) - Wikipedia

    en.wikipedia.org/wiki/Unit_interval_(data...

    A unit interval (UI) is the time taken in a data stream by each subsequent pulse (or symbol). When UI is used as a measurement unit of a time interval, the resulting measure of such time interval is dimensionless. It expresses the time interval in terms of UI.

  5. Indifference graph - Wikipedia

    en.wikipedia.org/wiki/Indifference_graph

    An indifference graph, formed from a set of points on the real line by connecting pairs of points whose distance is at most one. In graph theory, a branch of mathematics, an indifference graph is an undirected graph constructed by assigning a real number to each vertex and connecting two vertices by an edge when their numbers are within one unit of each other. [1]

  6. Partition of unity - Wikipedia

    en.wikipedia.org/wiki/Partition_of_unity

    In mathematics, a partition of unity of a topological space ⁠ ⁠ is a set ⁠ ⁠ of continuous functions from ⁠ ⁠ to the unit interval [0,1] such that for every point : there is a neighbourhood of ⁠ x {\displaystyle x} ⁠ where all but a finite number of the functions of ⁠ R {\displaystyle R} ⁠ are 0, and

  7. Compact space - Wikipedia

    en.wikipedia.org/wiki/Compact_space

    The interval C = (2, 4) is not compact because it is not closed (but bounded). The interval B = [0, 1] is compact because it is both closed and bounded. In mathematics, specifically general topology, compactness is a property that seeks to generalize the notion of a closed and bounded subset of Euclidean space. [1]

  8. Cantor function - Wikipedia

    en.wikipedia.org/wiki/Cantor_function

    The graph of the Cantor function on the unit interval. In mathematics, the Cantor function is an example of a function that is continuous, but not absolutely continuous. It is a notorious counterexample in analysis, because it challenges naive intuitions about continuity, derivative, and measure. Though it is continuous everywhere and has zero ...

  9. Interval exchange transformation - Wikipedia

    en.wikipedia.org/wiki/Interval_exchange...

    In mathematics, an interval exchange transformation [1] is a kind of dynamical system that generalises circle rotation. The phase space consists of the unit interval , and the transformation acts by cutting the interval into several subintervals, and then permuting these subintervals.

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