Affine selections of convex set-valued functions.
Algebraic and topological structures on the set of mean functions and generalization of the AGM mean
We present new structures and results on the set of mean functions on a given symmetric domain in ℝ². First, we construct on a structure of abelian group in which the neutral element is the arithmetic mean; then we study some symmetries in that group. Next, we construct on a structure of metric space under which is the closed ball with center the arithmetic mean and radius 1/2. We show in particular that the geometric and harmonic means lie on the boundary of . Finally, we give two theorems...
Algebraic properties of functions with the Cantor intermediate value property
Algebraische Beschreibung der Ableitung bei -Mal Stetig-Differenzierbaren Funktionen
Algebras of Borel measurable functions
We determine the size levels for any function on the hyperspace of an arc as follows. Assume Z is a continuum and consider the following three conditions: 1) Z is a planar AR; 2) cut points of Z have component number two; 3) any true cyclic element of Z contains at most two cut points of Z. Then any size level for an arc satisfies 1)-3) and conversely, if Z satisfies 1)-3), then Z is a diameter level for some arc.
Algoritmy na výpočet kořenů polynomu
Algunas consecuencias elementales del teorema de Weierstrass.
Almost classical solutions of Hamilton-Jacobi equations.
Almost continuous Darboux functions and Reed's pointwise convergence criteria
Almost everywhere convergence of the spherical partial Fourier integrals for radial functions.
Almost Everywhere First-Return Recovery
We present a new characterization of Lebesgue measurable functions; namely, a function f:[0,1]→ ℝ is measurable if and only if it is first-return recoverable almost everywhere. This result is established by demonstrating a connection between almost everywhere first-return recovery and a first-return process for yielding the integral of a measurable function.
Almost iterable functions.
Almost midconvex and almost convex set-valued functions
Almost quasicontinuity of multivalued maps on product spaces
Almost -convex and almost Wright-convex functions
Almost-distribution cosine functions and integrated cosine functions
We introduce the notion of almost-distribution cosine functions in a setting similar to that of distribution semigroups defined by Lions. We prove general results on equivalence between almost-distribution cosine functions and α-times integrated cosine functions.
Alternative characterisations of Lorentz-Karamata spaces
We present new formulae providing equivalent quasi-norms on Lorentz-Karamata spaces. Our results are based on properties of certain averaging operators on the cone of non-negative and non-increasing functions in convenient weighted Lebesgue spaces. We also illustrate connections between our results and mapping properties of such classical operators as the fractional maximal operator and the Riesz potential (and their variants) on the Lorentz-Karamata spaces.
Alternative definitions of -density topology
Always of the first category sets (II)
Amoeba relation and Galois-Tukey connections