Results 1 to 10 of about 336,088 (147)

Additive Function-on-Function Regression. [PDF]

open access: yesJ Comput Graph Stat, 2018
We study additive function-on-function regression where the mean response at a particular time point depends on the time point itself as well as the entire covariate trajectory. We develop a computationally efficient estimation methodology based on a novel combination of spline bases with an eigenbasis to represent the trivariate kernel function.
Kim JS   +4 more
europepmc   +5 more sources

Effective bounds of the variance of statistics on multisets of necklaces

open access: yesLietuvos Matematikos Rinkinys, 2021
The variance of a linear statistics on multisets of necklaces is explored.
Arvydas Karbonskis   +1 more
doaj   +1 more source

Periodic solutions in multivariate invariance arguments [PDF]

open access: yesOpuscula Mathematica, 2013
Inspired by the recent results of A. E. Abbas we determine continuous multivariate utility functions invariant with respect to a wide family of transformations related to the shift transformations.
Jacek Chudziak, Sebastian Wójcik
doaj   +1 more source

The distributions of sums of the prime indicators with respect to distinct frequencies

open access: yesLietuvos Matematikos Rinkinys, 2004
A characterization of a set of strongly additive functions fx which has the same limit law with respect to ordinary and logarithmic frequencies is obtained. Strongly additive functions which take zero or unit for each prime p are considered.
Jonas Šiaulys
doaj   +3 more sources

A Parametric Functional Equation Originating from Number Theory

open access: yesAnnales Mathematicae Silesianae, 2022
Let S be a semigroup and α, β ∈ ℝ. The purpose of this paper is to determine the general solution f : ℝ2 → S of the following parametric functional equation f(x1+x2+αy1y2,x1y2+x2y1+βy1y2)=f(x1,y1)f(x2,y2),f\left( {{x_1} + {x_2} + \alpha {y_1}{y_2},{x_1 ...
Mouzoun Aziz   +2 more
doaj   +1 more source

New Pexiderizations of Drygas’ Functional Equation on Abelian Semigroups

open access: yesAnnales Mathematicae Silesianae, 2023
Let (S, +) be an abelian semigroup, let (H, +) be an abelian group which is uniquely 2-divisible, and let ϕ be an endomorphism of S. We find the solutions f, h : S → H of each of the functional equations f(x+y)+f(x+ϕ(y))=h(x)+f(y)+f∘ϕ(y), x,y∈S,f(x+y)+f ...
Aissi Youssef, Zeglami Driss
doaj   +1 more source

Nanomaterials Function in Additive Manufacturing

open access: yesJournal of Kufa-Physics, 2023
Nanomaterials are substances that have at least one dimension that falls within the three-dimensional nanoscale range or fundamental structural components made of substances that fall inside this range.
Khan Rajib Hossain   +6 more
doaj   +1 more source

On Finitely Null-additive and Finitely Weakly Null-additive Relative to the σ–ring

open access: yesمجلة بغداد للعلوم, 2022
     This article introduces the concept of finitely null-additive set function relative to the σ– ring and many properties of this concept have been discussed. Furthermore, to introduce and study the notion of finitely weakly null-additive set function
Samah H. Asaad   +2 more
doaj   +1 more source

Stability of the Popoviciu type functional equations on groups [PDF]

open access: yesOpuscula Mathematica, 2011
We consider the stability problem for a class of functional equations related to the Popoviciu equation.
Małgorzata Chudziak
doaj   +1 more source

Function-Based Design Principles for Additive Manufacturing

open access: yesApplied Sciences, 2022
The development of additive manufacturing (AM) technologies has brought new design possibilities, and to utilise those possibilities, new sources of AM design knowledge are needed.
Filip Valjak   +3 more
doaj   +1 more source

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