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  2. Gyrotonic - Wikipedia

    en.wikipedia.org/wiki/Gyrotonic

    Gyrotonic, also known as the Gyrotonic Expansion System, is a system of exercise that was developed by Juliu Horvath in the 1980s. [1] [2] It is centered around enhancing spinal movement in three dimensions. [3] The system consists of two complementary exercise methods - the Gyrotonic and Gyrokinesis Methods. [4] Gyrotonic Tower and Pulley

  3. Contemporary ballet - Wikipedia

    en.wikipedia.org/wiki/Contemporary_ballet

    A contemporary ballet leap. Contemporary ballet is a genre of dance that incorporates elements of classical ballet and modern dance. [1] It employs classical ballet technique and in many cases classical pointe technique as well, but allows a greater range of movement of the upper body and is not constrained to the rigorously defined body lines and forms found in traditional, classical ballet.

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  5. Asymptotic expansion - Wikipedia

    en.wikipedia.org/wiki/Asymptotic_expansion

    In mathematics, an asymptotic expansion, asymptotic series or Poincaré expansion (after Henri Poincaré) is a formal series of functions which has the property that truncating the series after a finite number of terms provides an approximation to a given function as the argument of the function tends towards a particular, often infinite, point.

  6. Expansion (geometry) - Wikipedia

    en.wikipedia.org/wiki/Expansion_(geometry)

    The expansion is uniform if all the edges are the same length. Animation showing an expanded cube (and octahedron) In geometry, expansion is a polytope operation where facets are separated and moved radially apart, and new facets are formed at separated elements (vertices, edges, etc.). Equivalently this operation can be imagined by keeping ...

  7. Dyson series - Wikipedia

    en.wikipedia.org/wiki/Dyson_series

    In scattering theory, a part of mathematical physics, the Dyson series, formulated by Freeman Dyson, is a perturbative expansion of the time evolution operator in the interaction picture. Each term can be represented by a sum of Feynman diagrams .

  8. Hyperbolic functions - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_functions

    The hyperbolic functions represent an expansion of trigonometry beyond the circular functions. Both types depend on an argument , either circular angle or hyperbolic angle . Since the area of a circular sector with radius r and angle u (in radians) is r 2 u /2 , it will be equal to u when r = √ 2 .

  9. Post-Newtonian expansion - Wikipedia

    en.wikipedia.org/wiki/Post-Newtonian_expansion

    Expansion in 1/c 2 [ edit ] The post-Newtonian approximations are expansions in a small parameter, which is the ratio of the velocity of the matter that creates the gravitational field, to the speed of light , which in this case is more precisely called the speed of gravity . [ 1 ]