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  2. Periodic graph (geometry) - Wikipedia

    en.wikipedia.org/wiki/Periodic_Graph_(Geometry)

    A Euclidean graph (a graph embedded in some Euclidean space) is periodic if there exists a basis of that Euclidean space whose corresponding translations induce symmetries of that graph (i.e., application of any such translation to the graph embedded in the Euclidean space leaves the graph unchanged). Equivalently, a periodic Euclidean graph is ...

  3. Desmos - Wikipedia

    en.wikipedia.org/wiki/Desmos

    Some 50 employees joined Amplify. Desmos Studio was spun off as a separate public benefit corporation focused on building calculator products and other math tools. [7] In May 2023, Desmos released a beta for a remade Geometry Tool. In it, geometrical shapes can be made, as well as expressions from the normal graphing calculator, with extra ...

  4. Periodic graph (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Periodic_graph_(graph_theory)

    In graph theory, a branch of mathematics, a periodic graph with respect to an operator F on graphs is one for which there exists an integer n > 0 such that F n (G) is isomorphic to G. [1] For example, every graph is periodic with respect to the complementation operator , whereas only complete graphs are periodic with respect to the operator ...

  5. Poincaré plot - Wikipedia

    en.wikipedia.org/wiki/Poincaré_plot

    An RR tachograph is a graph of the numerical value of the RR-interval versus time. In the context of RR tachography, a Poincaré plot is a graph of RR(n) on the x-axis versus RR(n + 1) (the succeeding RR interval) on the y-axis, i.e. one takes a sequence of intervals and plots each interval against the following interval. [3]

  6. Periodic function - Wikipedia

    en.wikipedia.org/wiki/Periodic_function

    Periodic motion is motion in which the position(s) of the system are expressible as periodic functions, all with the same period. For a function on the real numbers or on the integers , that means that the entire graph can be formed from copies of one particular portion, repeated at regular intervals.

  7. TI-92 series - Wikipedia

    en.wikipedia.org/wiki/TI-92_series

    The TI-92 was originally released in 1995, and was the first symbolic calculator made by Texas Instruments. It came with a computer algebra system (CAS) based on Derive, geometry based on Cabri II, and was one of the first calculators to offer 3D graphing. The TI-92 was not allowed on most standardized tests due mostly to its QWERTY keyboard.

  8. Periodic graph - Wikipedia

    en.wikipedia.org/wiki/Periodic_Graph

    Periodic graph may refer to: Periodic graph (crystallography) or crystal net, a Euclidean graph representing the atomic or molecular structure of a crystal; Periodic graph (geometry), a Euclidean graph preserved under a lattice of translations; Periodic graph (graph theory), a graph that is periodic with respect to a graph theoretic operator

  9. Periodic graph (crystallography) - Wikipedia

    en.wikipedia.org/wiki/Periodic_graph...

    In crystallography, a periodic graph or crystal net is a three-dimensional periodic graph, i.e., a three-dimensional Euclidean graph whose vertices or nodes are points in three-dimensional Euclidean space, and whose edges (or bonds or spacers) are line segments connecting pairs of vertices, periodic in three linearly independent axial directions.