Results 1 to 10 of about 123,643 (248)

Polynomial Approximation on Unbounded Subsets, Markov Moment Problem and Other Applications [PDF]

open access: yesMathematics, 2020
This paper starts by recalling the author’s results on polynomial approximation over a Cartesian product A of closed unbounded intervals and its applications to solving Markov moment problems.
Octav Olteanu
doaj   +4 more sources

From Hahn–Banach Type Theorems to the Markov Moment Problem, Sandwich Theorems and Further Applications [PDF]

open access: yesMathematics, 2020
The aim of this review paper is to recall known solutions for two Markov moment problems, which can be formulated as Hahn–Banach extension theorems, in order to emphasize their relationship with the following problems: (1) pointing out a previously ...
Octav Olteanu
doaj   +4 more sources

Resolution of the finite Markov moment problem [PDF]

open access: yesComptes Rendus. Mathématique, 2009
We expose in full detail a constructive procedure to invert the so--called "finite Markov moment problem".
Brenier   +12 more
core   +5 more sources

Markov Moment Problem and Sandwich Conditions on Bounded Linear Operators in Terms of Quadratic Forms

open access: yesMathematics, 2022
As is well-known, unlike the one-dimensional case, there exist nonnegative polynomials in several real variables that are not sums of squares. First, we briefly review a method of approximating any real-valued nonnegative continuous compactly supported ...
Octav Olteanu
doaj   +2 more sources

Polynomial Approximation on Unbounded Subsets and the Markov Moment Problem

open access: yesInternational Journal of Analysis and Applications, 2013
We start this review paper by recalling some known and relatively recent results in polynomial approximation on unbounded subsets. These results allow approximation of nonnegative continuous functions with compact support contained in the first quadrant ...
Octav Olteanu
doaj   +3 more sources

Disentangling Boltzmann Brains, the Time-Asymmetry of Memory, and the Second Law [PDF]

open access: yesEntropy
Are your perceptions, memories and observations merely a statistical fluctuation arising from of the thermal equilibrium of the universe, bearing no correlation to the actual past state of the universe?
David Wolpert   +2 more
doaj   +2 more sources

The solution of one time-optimal problem on the basis of the Markov moment min-problem with even gaps [PDF]

open access: yes, 2003
The time-optimal problem for a linear system considered. This problem is reduced to the power Markov moment min-problem with even gaps.
Bugaevskaya, A., Korobov, V.
core   +3 more sources

Kinematic Modelling Without Singularity and Nonlinear Control of Satellite Attitude Using Direct Adaptive and Fuzzy PD Control Methods [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2021
Adaptive control technique is taken into consideration because of overcoming the problem of existence of uncertainties in the space missions. In this paper, a novel optimal direct adaptive control technique which is based on Markov parameters is ...
M. Navabi, Nazanin Safaei Hashekvaei
doaj   +1 more source

Mobile Multi-Path Transmission Scheduling Algorithm Based on Grey Markov Prediction [PDF]

open access: yesJisuanji gongcheng, 2021
Multi-Path Control Transmission Protocol (MPTCP) improves resource utilization and network throughput by aggregating multi-path bandwidth.However,in the wireless heterogeneous network environment,out-of-order packets and buffer block are serious due to ...
LI Ning, ZHONG Lujie, GAO Kai
doaj   +1 more source

On the Moment Problem and Related Problems

open access: yesMathematics, 2021
Firstly, we recall the classical moment problem and some basic results related to it. By its formulation, this is an inverse problem: being given a sequence (yj)j∈ℕn  of real numbers and a closed subset F⊆ℝn, n∈{1,2,…}, find a positive regular Borel ...
Octav Olteanu
doaj   +1 more source

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