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  2. Sobolev inequality - Wikipedia

    en.wikipedia.org/wiki/Sobolev_inequality

    The inequality expressing this fact has constants that do not involve the dimension of the space and, thus, the inequality holds in the setting of a Gaussian measure on an infinite-dimensional space. It is now known that logarithmic Sobolev inequalities hold for many different types of measures, not just Gaussian measures.

  3. Sobolev mapping - Wikipedia

    en.wikipedia.org/wiki/Sobolev_mapping

    In mathematics, a Sobolev mapping is a mapping between manifolds which has smoothness in some sense. Sobolev mappings appear naturally in manifold-constrained problems in the calculus of variations and partial differential equations , including the theory of harmonic maps .

  4. Poincaré inequality - Wikipedia

    en.wikipedia.org/wiki/Poincaré_inequality

    In mathematics, the Poincaré inequality [1] is a result in the theory of Sobolev spaces, named after the French mathematician Henri Poincaré. The inequality allows one to obtain bounds on a function using bounds on its derivatives and the geometry of its domain of definition.

  5. Logarithmic Sobolev inequalities - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_Sobolev...

    In mathematics, logarithmic Sobolev inequalities are a class of inequalities involving the norm of a function f, its logarithm, and its gradient . These inequalities were discovered and named by Leonard Gross, who established them in dimension-independent form, [1] [2] in the context of constructive quantum field theory. Similar results were ...

  6. Gagliardo–Nirenberg interpolation inequality - Wikipedia

    en.wikipedia.org/wiki/Gagliardo–Nirenberg...

    In mathematics, and in particular in mathematical analysis, the Gagliardo–Nirenberg interpolation inequality is a result in the theory of Sobolev spaces that relates the -norms of different weak derivatives of a function through an interpolation inequality.

  7. Trudinger's theorem - Wikipedia

    en.wikipedia.org/wiki/Trudinger's_theorem

    In mathematical analysis, Trudinger's theorem or the Trudinger inequality (also sometimes called the Moser–Trudinger inequality) is a result of functional analysis on Sobolev spaces. It is named after Neil Trudinger (and Jürgen Moser). It provides an inequality between a certain Sobolev space norm and an Orlicz space norm of a

  8. Sobolev conjugate - Wikipedia

    en.wikipedia.org/wiki/Sobolev_conjugate

    The Sobolev conjugate of p for <, where n is space dimensionality, is p ∗ = p n n − p > p {\displaystyle p^{*}={\frac {pn}{n-p}}>p} This is an important parameter in the Sobolev inequalities .

  9. Pólya–Szegő inequality - Wikipedia

    en.wikipedia.org/wiki/Pólya–Szegő_inequality

    In mathematical analysis, the Pólya–Szegő inequality (or Szegő inequality) states that the Sobolev energy of a function in a Sobolev space does not increase under symmetric decreasing rearrangement. [1] The inequality is named after the mathematicians George Pólya and Gábor Szegő.