Note on weak epimorphisms of $3$-nets without singular points
نویسندگان
چکیده
منابع مشابه
Weak 1/r-Nets for Moving Points
In this paper, we extend the weak r -net theorem to a kinetic setting where the underlying set of points is moving polynomially with bounded description complexity. We establish that one can find a kinetic analog N of a weak r -net of cardinality O(r d(d+1) 2 log r) whose points are moving with coordinates that are rational functions with bounded description complexity. Moreover, each member of...
متن کاملWeak E-nets for Points on a Hypersphere
A weak e-net for a set of points M, is a set of points W (not necessarily in M) where every convex set containing eiMI points in M must contain at least one point in W. Weak e-nets have applications in diverse areas such as computational geometry, learning theory, optimization and statistics. Here we show that, if M is a set of points quasi-uniformly distributed on a unit sphere sd-l, then ther...
متن کاملNote on Singular Integrals1
then by a well-known theorem of M. Riesz, ll/(*)IU<^ll/(*)IU ifi<#<«. Hardy and Littlewood [4], and Babenko [l], have complemented this result by proving that: \\f(x)\x\e\\p<Ap.f!\\f(x)\x\e\\P, if l<p< co, and -l/p<P<l/p'. The theory of conjugate functions has been extended to w-dimensions by A. P. Calderon and A. Zygmund. In [2] and [3] they have considered a wide variety of singular transform...
متن کاملGeneralized Helices and Singular Points
In this paper, we define X-slant helix in Euclidean 3-space and we obtain helix, slant helix, clad and g-clad helix as special case of the X-slant helix. Then we study Darboux, tangential darboux developable surfaces and their singular points. Especially we show that the striction lines of these surfaces are singular locus of the surfaces.
متن کاملA note on 3-D simple points and simple-equivalence
Topology-preserving operators, like homotopic skeletonization, are used to transform the geometry of an object while leaving unchanged its topological characteristics. In discrete grids (Z2 or Z3), such a transformation can be defined thanks to the notion of simple point: intuitively, a point of an object is called simple if it can be deleted from this object without altering topology. This not...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Časopis pro pěstování matematiky
سال: 1976
ISSN: 0528-2195
DOI: 10.21136/cpm.1976.108681