Generalization of the tangent space to a manifold to the case of certain spaces
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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.
definitions for a tangentcone, including the adjacent cone, Bouligand's contingent cone, and the Clarke tangentcone. These three cones coincide for a convex...
{\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...
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 tangentcones of a convex...
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...
non-negative integer or infinite. One can define a notion of "angle" and "tangentcone" in these spaces. Alexandrov spaces with curvature ≥ k are important...
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)...
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...
the tangentcone 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...
related algorithms, such as the algorithms for the computation of the tangentcone. As Gröbner bases are defined for polynomials in a fixed number of variables...
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...
p} is a simple node, the tangentcone 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)...
ISBN 978-0-8218-3383-4. Kotani, M.; Sunada, T. (2006). "Large deviation and the tangentcone at infinity of a crystal lattice". Math. Z. 254 (4): 837–870. doi:10...
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...
non-singular; this implies that the singular point has multiplicity two and the tangentcone is not singular outside its vertex. Milnor map Resolution of singularities...
vanishes if they touch each other. See Salmon (1879, p.76). tangentcone A tangentcone is a cone defined by the non-zero terms of smallest degree in the...
{\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}...
mathematics, the paratingent cone and contingent cone were introduced by Bouligand (1932), and are closely related to tangentcones. Let S {\displaystyle S}...
regular if and only if the ring (which is the ring of functions on the tangentcone) ⨁ n m n / m n + 1 {\displaystyle \bigoplus _{n}m^{n}/m^{n+1}} is isomorphic...
interior is empty. This situation is impossible in finite dimensions. The tangentcone to the cube at the zero vector is the whole space. Every subset of the...
usually is equal to the pitch angle. The back cone of a bevel or hypoid gear is an imaginary conetangent to the outer ends of the teeth, with its elements...
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...
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...
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...
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...
span forty years; his notable contributions in computer algebra are the tangentcone algorithm and its extension of Buchberger theory of Gröbner bases and...
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...
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...