Results 21 to 30 of about 178,723 (265)

The embedding problem in iteration theory

open access: yesESAIM: Proceedings and Surveys, 2014
This is a survey paper on selected topics concerning the embeddability of given mappings in real flows. Particular attention will be paid to the relationship between the problem of the embeddability and functional equations.Let X be a
Zdun Marek Cezary
doaj   +1 more source

Enumerating alternating tree families [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We study two enumeration problems for $\textit{up-down alternating trees}$, i.e., rooted labelled trees $T$, where the labels $ v_1, v_2, v_3, \ldots$ on every path starting at the root of $T$ satisfy $v_1 < v_2 > v_3 < v_4 > \cdots$.
Markus Kuba, Alois Panholzer
doaj   +1 more source

Inequalities for Information Potentials and Entropies

open access: yesMathematics, 2020
We consider a probability distribution p0(x),p1(x),… depending on a real parameter x. The associated information potential is S(x):=∑kpk2(x). The Rényi entropy and the Tsallis entropy of order 2 can be expressed as R(x)=−logS(x) and T(x)=1−S(x).
Ana Maria Acu   +3 more
doaj   +1 more source

Independence Characterization for Wishart and Kummer Random Matrices

open access: yesRevstat Statistical Journal, 2020
We generalize the following univariate characterization of the Kummer and Gamma distributions to the cone of symmetric positive definite matrices: let X and Y be independent, non-degenerate random variables valued in (0,∞), then U = Y /(1 +X) and V = X ...
Bartosz Ko lodziejek   +1 more
doaj   +1 more source

Generating Functions for New Families of Combinatorial Numbers and Polynomials: Approach to Poisson–Charlier Polynomials and Probability Distribution Function

open access: yesAxioms, 2019
The aim of this paper is to construct generating functions for new families of combinatorial numbers and polynomials. By using these generating functions with their functional and differential equations, we not only investigate properties of these new ...
Irem Kucukoglu   +2 more
doaj   +1 more source

The equality case in some recent convexity inequalities [PDF]

open access: yesOpuscula Mathematica, 2011
In this paper, we investigate a functional equation related to some recently introduced and investigated convexity type inequalities.
Gyula Maksa, Zsolt Páles
doaj   +1 more source

Functional evolution equations

open access: yesJournal of Mathematical Analysis and Applications, 2003
The paper concerns the functional evolution equation \[ u'(t) \in B u + F(t, u_t) , \;\;t >0, \] \[ u_0(s)= \phi(s)\in C^1([-r,0];X), \] where \(X\) is a real Banach space, not necessarily reflexive, \(F : [0,\infty) \times C([-r,0];X) \to X \) is a single-valued function and \(B: D(B)\subset X \to X\) is a multi-valued nonlinear operator.
openaire   +2 more sources

System of delay difference equations with continuous time with lag function between two known functions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
The asymptotic behavior of solutions of the system of difference equations with continuous time and lag function between two known real functions is studied.
Hajnalka Péics   +3 more
doaj   +1 more source

Some Economic Dynamics Problems for Hybrid Models with Aftereffect

open access: yesMathematics, 2020
In this paper, we consider a class of economic dynamics models in the form of linear functional differential systems with continuous and discrete times (hybrid models) that covers many kinds of dynamic models with aftereffect.
Eugene Bravyi   +2 more
doaj   +1 more source

Patient‐Level Barriers and Facilitators to Inpatient Physical Therapy in Adolescents and Young Adults With a Hematological Malignancy: A Qualitative Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite their increased risk for functional impairment resulting from cancer and its treatments, few adolescents and young adults (AYAs) with a hematological malignancy receive the recommended or therapeutic dose of exercise per week during inpatient hospitalizations.
Jennifer A. Kelleher   +8 more
wiley   +1 more source

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