partial cone
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Partial differential equation — A visualisation of a solution to the heat equation on a two dimensional plane In mathematics, partial differential equations (PDE) are a type of differential equation, i.e., a relation involving an unknown function (or functions) of several… … Wikipedia
Partial derivative — In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary).… … Wikipedia
Hertzian cone — A Hertzian cone is the cone of force that propagates through a brittle, amorphous or cryptocrystalline solid material from a point of impact, eventually removing a full or partial cone. An example often occurs when a plate glass window is struck… … Wikipedia
Monge cone — In the mathematical theory of partial differential equations (PDE), the Monge cone is a geometrical object associated with a first order equation. It is named for Gaspard Monge. In two dimensions, let be a PDE for an unknown real valued function… … Wikipedia
First order partial differential equation — In mathematics, a first order partial differential equation is a partial differential equation that involves only first derivatives of the unknown function of n variables. The equation takes the form: F(x 1,ldots,x n,u,u {x 1},ldots u {x n}) =0 … Wikipedia
Convex cone — In linear algebra, a convex cone is a subset of a vector space over an ordered field that is closed under linear combinations with positive coefficients. A convex cone (light blue). Inside of it, the light red convex cone consists of all points… … Wikipedia
Light cone — in 2D space plus a time dimension. A light cone is the path that a flash of light, emanating from a single event (localized to a single point in space and a single moment in time) and traveling in all directions, would take through spacetime. If… … Wikipedia
Tangent cone — In geometry, the tangent cone is a generalization of the notion of the tangent space to a manifold to the case of certain spaces with singularities. Definition in convex geometry Let K be a closed convex subset of a real vector space V and part;… … Wikipedia
Calixarene — A calixarene is a macrocycle or cyclic oligomer based on a hydroxyalkylation product of a phenol and an aldehyde [1] . The word calixarene is derived from calix or chalice because this type of molecule resembles a vase and from the word arene… … Wikipedia
Chert — For the Spanish municipality, see Xert. Chert Chert ( / … Wikipedia
Calixaren — Calixarene (Calix = lat. für „Kelch”; mit dem dt. Wort verwandt) sind eine Klasse organischer makrozyklischer Moleküle. Calixarene bestehen aus Phenoleinheiten, die jeweils in ortho Stellung zur OH Gruppe mit Methylenbrücken verbunden sind. Am… … Deutsch Wikipedia
