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  2. Rademacher distribution - Wikipedia

    en.wikipedia.org/wiki/Rademacher_distribution

    Let {x i} be a set of random variables with a Rademacher distribution.Let {a i} be a sequence of real numbers.Then (> ‖ ‖) /where ||a|| 2 is the Euclidean norm of the sequence {a i}, t > 0 is a real number and Pr(Z) is the probability of event Z.

  3. Summation by parts - Wikipedia

    en.wikipedia.org/wiki/Summation_by_parts

    A summation-by-parts (SBP) finite difference operator conventionally consists of a centered difference interior scheme and specific boundary stencils that mimics behaviors of the corresponding integration-by-parts formulation. [3] [4] The boundary conditions are usually imposed by the Simultaneous-Approximation-Term (SAT) technique. [5]

  4. Rademacher complexity - Wikipedia

    en.wikipedia.org/wiki/Rademacher_complexity

    Gaussian complexity is a similar complexity with similar physical meanings, and can be obtained from the Rademacher complexity using the random variables instead of , where are Gaussian i.i.d. random variables with zero-mean and variance 1, i.e. (,). Gaussian and Rademacher complexities are known to be equivalent up to logarithmic factors.

  5. Contour integration - Wikipedia

    en.wikipedia.org/wiki/Contour_integration

    Take a to be greater than 1, so that the imaginary unit i is enclosed within the curve. The contour integral is +. Since e itz is an entire function (having no singularities at any point in the complex plane), this function has singularities only where the denominator z 2 + 1 is zero

  6. Ricci calculus - Wikipedia

    en.wikipedia.org/wiki/Ricci_calculus

    For example, in 3-D Euclidean space and using Cartesian coordinates; the coordinate vector A = (A 1, A 2, A 3) = (A x, A y, A z) shows a direct correspondence between the subscripts 1, 2, 3 and the labels x, y, z. In the expression A i, i is interpreted as an index ranging over the values 1, 2, 3, while the x, y, z subscripts are only labels ...

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  8. Tensor contraction - Wikipedia

    en.wikipedia.org/wiki/Tensor_contraction

    In multilinear algebra, a tensor contraction is an operation on a tensor that arises from the canonical pairing of a vector space and its dual.In components, it is expressed as a sum of products of scalar components of the tensor(s) caused by applying the summation convention to a pair of dummy indices that are bound to each other in an expression.

  9. Euler's equations (rigid body dynamics) - Wikipedia

    en.wikipedia.org/wiki/Euler's_equations_(rigid...

    When I is not constant in the external reference frame (i.e. the body is moving and its inertia tensor is not constantly diagonal) then I cannot be pulled through the derivative operator acting on L. In this case I ( t ) and ω ( t ) do change together in such a way that the derivative of their product is still zero.

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