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  2. Penrose graphical notation - Wikipedia

    en.wikipedia.org/wiki/Penrose_graphical_notation

    A diagram in the notation consists of several shapes linked together by lines. The notation widely appears in modern quantum theory , particularly in matrix product states and quantum circuits . In particular, categorical quantum mechanics (which includes ZX-calculus ) is a fully comprehensive reformulation of quantum theory in terms of Penrose ...

  3. Hodograph - Wikipedia

    en.wikipedia.org/wiki/Hodograph

    The study of the hodograph, as a method of investigating the motion of a body, was introduced by Sir W. R. Hamilton. The hodograph may be defined as the path traced out by the extremity of a vector which continually represents, in direction and magnitude, the velocity of a moving body.

  4. Free body diagram - Wikipedia

    en.wikipedia.org/wiki/Free_body_diagram

    Block on a ramp and corresponding free body diagram of the block.. In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition.

  5. Borromean rings - Wikipedia

    en.wikipedia.org/wiki/Borromean_rings

    The Borromean rings have been used in different contexts to indicate strength in unity. [14] In particular, some have used the design to symbolize the Trinity. [3] A 13th-century French manuscript depicting the Borromean rings labeled as unity in trinity was lost in a fire in the 1940s, but reproduced in an 1843 book by Adolphe Napoléon Didron.

  6. Vector field - Wikipedia

    en.wikipedia.org/wiki/Vector_field

    The divergence at a point represents the degree to which a small volume around the point is a source or a sink for the vector flow, a result which is made precise by the divergence theorem. The divergence can also be defined on a Riemannian manifold , that is, a manifold with a Riemannian metric that measures the length of vectors.

  7. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    There are many areas of mathematics, which include number theory (the study of numbers), algebra (the study of formulas and related structures), geometry (the study of shapes and spaces that contain them), analysis (the study of continuous changes), and set theory (presently used as a foundation for all mathematics).

  8. Brachistochrone curve - Wikipedia

    en.wikipedia.org/wiki/Brachistochrone_curve

    The curve of fastest descent is not a straight or polygonal line (blue) but a cycloid (red).. In physics and mathematics, a brachistochrone curve (from Ancient Greek βράχιστος χρόνος (brákhistos khrónos) 'shortest time'), [1] or curve of fastest descent, is the one lying on the plane between a point A and a lower point B, where B is not directly below A, on which a bead slides ...

  9. Parabolic arch - Wikipedia

    en.wikipedia.org/wiki/Parabolic_arch

    A simple hanging rope bridge describes a catenary, but if they were in the form of a suspension bridges they usually describe a parabola in shape, with the roadway hanging from the inverted arch. Modern suspension bridges were built from the early 19th century, beginning with chains and progressing to more and more elegant steel rope examples ...