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Tangent cone information


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.

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Tangent cone

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definitions for a tangent cone, including the adjacent cone, Bouligand's contingent cone, and the Clarke tangent cone. These three cones coincide for a convex...

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Nose cone design

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{\displaystyle y=R_{1}+(x-L_{1})\tan(\phi _{2})\;} Next to a simple cone, the tangent ogive shape is the most familiar in hobby rocketry. The profile of...

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Convex cone

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convex cones. The conical hull of a finite or infinite set of vectors in R n {\displaystyle \mathbb {R} ^{n}} is a convex cone. The tangent cones of a convex...

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Tangent

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In geometry, the tangent line (or simply tangent) to a plane curve at a given point is, intuitively, the straight line that "just touches" the curve at...

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Alexandrov space

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non-negative integer or infinite. One can define a notion of "angle" and "tangent cone" in these spaces. Alexandrov spaces with curvature ≥ k are important...

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Zariski tangent space

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In algebraic geometry, the Zariski tangent space is a construction that defines a tangent space at a point P on an algebraic variety V (and more generally)...

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Monge cone

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varies, the tangent planes envelope a cone in R3 with vertex at x 0 , y 0 , z 0 {\displaystyle x_{0},y_{0},z_{0}} , called the Monge cone. When F is quasilinear...

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Normal cone

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the tangent cone and the tangent space (Zariski tangent space) to the point. When Y = Spec R is affine, the definition means that the normal cone to X...

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Lexicographic order

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related algorithms, such as the algorithms for the computation of the tangent cone. As Gröbner bases are defined for polynomials in a fixed number of variables...

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Parabola

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and the accompanying diagram show that the tangent BE bisects the angle ∠FEC. In other words, the tangent to the parabola at any point bisects the angle...

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Kummer surface

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p} is a simple node, the tangent cone to this point is mapped to a conic under the double cover. This conic is in fact tangent to the six lines (w.o proof)...

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Random walk

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ISBN 978-0-8218-3383-4. Kotani, M.; Sunada, T. (2006). "Large deviation and the tangent cone at infinity of a crystal lattice". Math. Z. 254 (4): 837–870. doi:10...

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Hyperbola

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each point of which the rays to two fixed foci are reflections across the tangent line at that point, or as the solution of certain bivariate quadratic equations...

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Singular point of an algebraic variety

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non-singular; this implies that the singular point has multiplicity two and the tangent cone is not singular outside its vertex. Milnor map Resolution of singularities...

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Glossary of classical algebraic geometry

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vanishes if they touch each other. See Salmon (1879, p.76). tangent cone A tangent cone is a cone defined by the non-zero terms of smallest degree in the...

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Causal structure

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{\displaystyle M} ) then the nonzero tangent vectors at each point in the manifold can be classified into three disjoint types. A tangent vector X {\displaystyle X}...

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Paratingent cone

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mathematics, the paratingent cone and contingent cone were introduced by Bouligand (1932), and are closely related to tangent cones. Let S {\displaystyle S}...

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Commutative ring

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regular if and only if the ring (which is the ring of functions on the tangent cone) ⨁ n m n / m n + 1 {\displaystyle \bigoplus _{n}m^{n}/m^{n+1}} is isomorphic...

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Hilbert cube

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interior is empty. This situation is impossible in finite dimensions. The tangent cone to the cube at the zero vector is the whole space. Every subset of the...

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List of gear nomenclature

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usually is equal to the pitch angle. The back cone of a bevel or hypoid gear is an imaginary cone tangent to the outer ends of the teeth, with its elements...

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World line

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Harvey A curve M in [spacetime] is called a worldline of a particle if its tangent is future timelike at each point. The arclength parameter is called proper...

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Tangent measure

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measure, the cone of tangent measures is also closed under translations. At μ almost every a in the support of μ, the cone Tan(μ, a) of tangent measures of...

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Null hypersurface

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respect to the local metric tensor). A light cone is an example. An alternative characterization is that the tangent space at every point of a hypersurface...

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Minkowski space

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The tangent space at each event is a vector space of the same dimension as spacetime, 4. In practice, one need not be concerned with the tangent spaces...

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Teo Mora

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span forty years; his notable contributions in computer algebra are the tangent cone algorithm and its extension of Buchberger theory of Gröbner bases and...

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Conic section

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the cone. The degenerate conic is either: a point, when the plane intersects the cone only at the apex; a straight line, when the plane is tangent to the...

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Ruled surface

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surface of a cylinder or cone, a conical surface with elliptical directrix, the right conoid, the helicoid, and the tangent developable of a smooth curve...

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