نتایج جستجو برای: parabolic antenna
تعداد نتایج: 56652 فیلتر نتایج به سال:
We adapt the Levi’s parametrix method to prove existence, estimates and qualitative properties of a global fundamental solution to ultraparabolic partial differential equations of Kolmogorov type. Existence and uniqueness results for the Cauchy problem are also proved.
Let f be a normalized analytic function defined on the unit disk and fλ z : 1 − λ z λf z for 0 < λ ≤ 1. For α > 0, a function f ∈ SP α, λ if zf ′ z /fλ z lies in the parabolic region Ω : {w : |w − α| < Rew α}. Let CP α, λ be the corresponding class consisting of functions f such that zf ′ z ′/f ′ λ z lies in the region Ω. For an appropriate δ > 0, the δ-neighbourhood of a function f ∈ CP α, λ i...
A holomorphic representation formula for special parabolic hyperspheres is given.
In this paper sufficient conditions are determined for functions of the form f(z) = z 1 + ∞ ∑ 1 bkz k , f(z) = z (1 + zn)k and certain other types of functions to be parabolic
A surface in hyperbolic space H 3 invariant by a group of parabolic isometries is called a parabolic surface. In this paper we investigate parabolic surfaces of H 3 that satisfy a linear Weingarten relation of the form aκ1 + bκ2 = c or aH + bK = c, where a, b, c ∈ R and, as usual, κi are the principal curvatures, H is the mean curvature and K is de Gaussian curvature. We classify all parabolic ...
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