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  2. Polarization identity - Wikipedia

    en.wikipedia.org/wiki/Polarization_identity

    More generally, in the presence of a ring involution or where 2 is not invertible, one distinguishes -quadratic forms and -symmetric forms; a symmetric form defines a quadratic form, and the polarization identity (without a factor of 2) from a quadratic form to a symmetric form is called the "symmetrization map", and is not in general an ...

  3. Real coordinate space - Wikipedia

    en.wikipedia.org/wiki/Real_coordinate_space

    R 4 can be imagined using the fact that 16 points (x 1, x 2, x 3, x 4), where each x k is either 0 or 1, are vertices of a tesseract (pictured), the 4-hypercube (see above). The first major use of R 4 is a spacetime model: three spatial coordinates plus one temporal .

  4. Riesz's lemma - Wikipedia

    en.wikipedia.org/wiki/Riesz's_lemma

    If is a reflexive Banach space then this conclusion is also true when = [2]. Metric reformulation. As usual, let (,):= ‖ ‖ denote the canonical metric induced by the norm, call the set {: ‖ ‖ =} of all vectors that are a distance of from the origin the unit sphere, and denote the distance from a point to the set by (,) := (,) = ‖ ‖.

  5. Trigonometric polynomial - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_polynomial

    A trigonometric polynomial can be considered a periodic function on the real line, with period some divisor of ⁠ ⁠, or as a function on the unit circle.. Trigonometric polynomials are dense in the space of continuous functions on the unit circle, with the uniform norm; [4] this is a special case of the Stone–Weierstrass theorem.

  6. 'Top Chef' holiday ham is sweet and spicy: Here's the recipe ...

    www.aol.com/top-chef-holiday-ham-sweet-100040850...

    Prepare the ham. 1. Preheat your oven to 325 degrees Fahrenheit. 2. Place the ham cut-side down in a roasting pan. Bake the ham. 3. Insert cloves into the ham, spacing them 1 inch apart.

  7. Naked teacher caught inside elementary school with sex toys ...

    www.aol.com/naked-teacher-caught-inside...

    A Florida teacher was caught naked inside of an elementary school classroom with sex toys, marijuana and women’s underwear — and punched a cop while trying to flee the scene, according to police.

  8. Johni Broome's double-double sends No. 2 Auburn to a 91-53 ...

    www.aol.com/johni-broomes-double-double-sends...

    Johni Broome had 21 points and a career-high 20 rebounds to lead No. 2 Auburn to a 91-53 win over Ohio State on Saturday. Broome, a senior forward, added six assists in the first 20-point, 20 ...

  9. 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 ...