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  2. Norm (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Norm_(mathematics)

    The concept of unit circle (the set of all vectors of norm 1) is different in different norms: for the 1-norm, the unit circle is a square oriented as a diamond; for the 2-norm (Euclidean norm), it is the well-known unit circle; while for the infinity norm, it is an axis-aligned square.

  3. Dual norm - Wikipedia

    en.wikipedia.org/wiki/Dual_norm

    The Frobenius norm defined by ‖ ‖ = = = | | = ⁡ = = {,} is self-dual, i.e., its dual norm is ‖ ‖ ′ = ‖ ‖.. The spectral norm, a special case of the induced norm when =, is defined by the maximum singular values of a matrix, that is, ‖ ‖ = (), has the nuclear norm as its dual norm, which is defined by ‖ ‖ ′ = (), for any matrix where () denote the singular values ...

  4. Hamming weight - Wikipedia

    en.wikipedia.org/wiki/Hamming_weight

    With unlimited memory, we could simply create a large lookup table of the Hamming weight of every 64 bit integer. If we can store a lookup table of the hamming function of every 16 bit integer, we can do the following to compute the Hamming weight of every 32 bit integer.

  5. File:Prox function for both L2 and L1 norm.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Prox_function_for...

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  6. Canonical normal form - Wikipedia

    en.wikipedia.org/wiki/Canonical_normal_form

    There are 2 n minterms of n variables, since a variable in the minterm expression can be in either its direct or its complemented form—two choices per variable. Minterms are often numbered by a binary encoding of the complementation pattern of the variables, where the variables are written in a standard order, usually alphabetical.

  7. 2-norm - Wikipedia

    en.wikipedia.org/?title=2-norm&redirect=no

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  8. Uniform norm - Wikipedia

    en.wikipedia.org/wiki/Uniform_norm

    For example, points (2, 0), (2, 1), and (2, 2) lie along the perimeter of a square and belong to the set of vectors whose sup norm is 2. In mathematical analysis , the uniform norm (or sup norm ) assigns, to real- or complex -valued bounded functions ⁠ f {\displaystyle f} ⁠ defined on a set ⁠ S {\displaystyle S} ⁠ , the non-negative number

  9. Normed vector space - Wikipedia

    en.wikipedia.org/wiki/Normed_vector_space

    The Euclidean norm of a Euclidean vector space is a special case that allows defining Euclidean distance by the formula (,) = ‖ ‖. The study of normed spaces and Banach spaces is a fundamental part of functional analysis , a major subfield of mathematics.