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  2. Lasswell's model of communication - Wikipedia

    en.wikipedia.org/wiki/Lasswell's_model_of...

    [2] [10] [12] For example, Greenberg and Salwen state: "Although Lasswell's model draws attention to several key elements in the mass communication process, it does no more than describe general areas of study. It does not link elements together with any specificity, and there is no notion of an active process."

  3. Five-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Five-dimensional_space

    The first approach is space-time-matter, which utilizes an unrestricted group of 5D coordinate transforms to derive new solutions of the Einstein's field equations that agree with the corresponding classical solutions in 4D spacetime. [8] Another 5D representation describes quantum physics from a thermal-space-time ensemble perspective and ...

  4. Jakobson's functions of language - Wikipedia

    en.wikipedia.org/wiki/Jakobson's_functions_of...

    The six factors of an effective verbal communication. To each one corresponds a communication function (not displayed in this picture). [1] Roman Jakobson defined six functions of language (or communication functions), according to which an effective act of verbal communication can be described. [2] Each of the functions has an associated factor.

  5. List of mathematical shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_shapes

    Facet, an (n-1)-dimensional element; Ridge, an (n-2)-dimensional element; Peak, an (n-3)-dimensional element; For example, in a polyhedron (3-dimensional polytope), a face is a facet, an edge is a ridge, and a vertex is a peak. Vertex figure: not itself an element of a polytope, but a diagram showing how the elements meet.

  6. Four-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Four-dimensional_space

    Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.

  7. Rotations in 4-dimensional Euclidean space - Wikipedia

    en.wikipedia.org/wiki/Rotations_in_4-dimensional...

    The trajectory of a point can be written as a function of time as {ξ 10 + ω 1 t, η 0, ξ 20 + ω 2 t} and stereographically projected onto its associated torus, as in the figures below. [8] In these figures, the initial point is taken to be {0, ⁠ π / 4 ⁠, 0}, i.e. on the Clifford torus. In Fig. 1, two simple rotation trajectories are ...

  8. Kaluza–Klein theory - Wikipedia

    en.wikipedia.org/wiki/Kaluza–Klein_theory

    The five-dimensional (5D) theory developed in three steps. The original hypothesis came from Theodor Kaluza, who sent his results to Albert Einstein in 1919 [2] and published them in 1921. [3] Kaluza presented a purely classical extension of general relativity to 5D, with a metric tensor of 15 components.

  9. Regular 4-polytope - Wikipedia

    en.wikipedia.org/wiki/Regular_4-polytope

    The non-diagonal numbers say how many of the column's element occur in or at the row's element. For example, there are 2 vertices in each edge (each edge has 2 vertices), and 2 cells meet at each face (each face belongs to 2 cells), in any regular 4-polytope. The configuration for the dual polytope can be obtained by rotating the matrix by 180 ...