polar normal
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Normal coordinates — In differential geometry, normal coordinates at a point p in a differentiable manifold equipped with a symmetric affine connection are a local coordinate system in a neighborhood of p obtained by applying the exponential map to the tangent space… … Wikipedia
Polar coordinate system — Points in the polar coordinate system with pole O and polar axis L. In green, the point with radial coordinate 3 and angular coordinate 60 … Wikipedia
Polar ice packs — [ NOAA Projected Arctic changes] Polar ice packs are large areas of pack ice formed from seawater in the Earth s polar regions, known as polar ice caps: the Arctic ice pack (or Arctic ice cap) of the Arctic Ocean and the Antarctic ice pack of the … Wikipedia
Polar (personnage) — Personnages de Crash Bandicoot Cet article répertorie l ensemble des personnages de la série de jeux vidéo Crash Bandicoot. Sommaire 1 Les protagonistes 1.1 Crash Bandicoot 1.2 Coco Bandicoot 1.3 Crunc … Wikipédia en Français
Polar night — Typical blue twilight experienced during the polar night in Longyearbyen, Svalbard located at 78 degrees north. The polar night occurs when the night lasts for more than 24 hours. This occurs only inside the polar circles. The opposite… … Wikipedia
Polar decomposition — In mathematics, particularly in linear algebra and functional analysis, the polar decomposition of a matrix or linear operator is a factorization analogous to the polar form of a nonzero complex number z where r is the absolute value of z (a… … Wikipedia
Polar body — A polar body is a cell structure found inside an ovum. Both animal and plant ova possess it. Asymmetrical cell division (cytokinesis) leads to the production of polar bodies during oogenesis. To conserve nutrients, the majority of cytoplasm is… … Wikipedia
Polar Boy — Superherobox caption = character name = Polar Boy publisher = DC Comics debut = Adventure Comics #306 (March 1963) creators = Edmond Hamilton and John Forte alter ego = Brek Bannin full name = species = Human homeworld = Tharr alliances = Legion… … Wikipedia
Normal distribution — This article is about the univariate normal distribution. For normally distributed vectors, see Multivariate normal distribution. Probability density function The red line is the standard normal distribution Cumulative distribution function … Wikipedia
Normal matrix — A complex square matrix A is a normal matrix if where A* is the conjugate transpose of A. That is, a matrix is normal if it commutes with its conjugate transpose. If A is a real matrix, then A*=AT. Hence, the matrix is normal if ATA = AAT.… … Wikipedia
Normal mode — For other types of mode, see Mode (disambiguation). Vibration of a single normal mode of a circular disc with a pinned boundary condition along the entire outer edge. See other modes. A normal mode of an oscillating system is a pattern of motio … Wikipedia
