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  2. Vector field - Wikipedia

    en.wikipedia.org/wiki/Vector_field

    In vector calculus and physics, a vector field is an assignment of a vector to each point in a space, most commonly Euclidean space . [1] A vector field on a plane can be visualized as a collection of arrows with given magnitudes and directions, each attached to a point on the plane. Vector fields are often used to model, for example, the speed ...

  3. Frenet–Serret formulas - Wikipedia

    en.wikipedia.org/wiki/Frenet–Serret_formulas

    A space curve; the vectors T, N and B; and the osculating plane spanned by T and N. In differential geometry, the Frenet–Serret formulas describe the kinematic properties of a particle moving along a differentiable curve in three-dimensional Euclidean space, or the geometric properties of the curve itself irrespective of any motion.

  4. Lattice problem - Wikipedia

    en.wikipedia.org/wiki/Lattice_problem

    Lattice problem. In computer science, lattice problems are a class of optimization problems related to mathematical objects called lattices. The conjectured intractability of such problems is central to the construction of secure lattice-based cryptosystems: lattice problems are an example of NP-hard problems which have been shown to be average ...

  5. Scalar (physics) - Wikipedia

    en.wikipedia.org/wiki/Scalar_(physics)

    A scalar in physics and other areas of science is also a scalar in mathematics, as an element of a mathematical field used to define a vector space.For example, the magnitude (or length) of an electric field vector is calculated as the square root of its absolute square (the inner product of the electric field with itself); so, the inner product's result is an element of the mathematical field ...

  6. Bloch's theorem - Wikipedia

    en.wikipedia.org/wiki/Bloch's_theorem

    In condensed matter physics, Bloch's theorem states that solutions to the Schrödinger equation in a periodic potential can be expressed as plane waves modulated by periodic functions. The theorem is named after the Swiss physicist Felix Bloch, who discovered the theorem in 1929. [1] Mathematically, they are written [2] Bloch function.

  7. Parallelogram of force - Wikipedia

    en.wikipedia.org/wiki/Parallelogram_of_force

    The parallelogram of forces is a method for solving (or visualizing) the results of applying two forces to an object. When more than two forces are involved, the geometry is no longer a parallelogram, but the same principles apply to a polygon of forces. The resultant force due to the application of a number of forces can be found geometrically ...

  8. Burgers vector - Wikipedia

    en.wikipedia.org/wiki/Burgers_vector

    Generally, the Burgers vector of a dislocation is defined by performing a line integral over the distortion field around the dislocation line. where the integration path L is a Burgers circuit around the dislocation line, ui is the displacement field, and is the distortion field. In most metallic materials, the magnitude of the Burgers vector ...

  9. Spinor - Wikipedia

    en.wikipedia.org/wiki/Spinor

    In geometry and physics, spinors (pronounced "spinner" IPA / s p ɪ n ər /) are elements of a complex number-based vector space that can be associated with Euclidean space. [ b ] A spinor transforms linearly when the Euclidean space is subjected to a slight ( infinitesimal ) rotation, [ c ] but unlike geometric vectors and tensors , a spinor ...

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