Results 31 to 40 of about 672,782 (279)
Functional renormalization group for non-equilibrium quantum many-body problems [PDF]
, 2006 We extend the concept of the functional renormalization for quantum many-body problems to non-equilibrium situations. Using a suitable generating functional based on the Keldysh approach, we derive a system of coupled differential equations for the $m ...
A. C. Hewson +15 more
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Advances in Difference Equations, 2020 This paper is concerned with the existence of continuous solutions of a set-valued functional integral equation of Volterra–Stieltjes type. The continuous dependence of the solution on the set of selections of the set-valued function will be proven.
Ahmed Mohamed El-Sayed +1 more
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On multi-term proportional fractional differential equations and inclusions
Advances in Difference Equations, 2020 The aim of this paper is to study new nonlocal boundary value problems of fractional differential equations and inclusions supplemented with slit-strips integral boundary conditions.
Wafa Shammakh +2 more
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Value Function and Optimal Control of Differential Inclusions
Annals of the Alexandru Ioan Cuza University - Mathematics, 2015 Abstract Optimal control system described by differential inclusion with continuous and one sided Perron right-hand side in a finite dimensional space is studied in the paper. We prove that the value function is the unique solution of a proximal Hamilton-Jacobi inequalities.
Donchev, T., Nosheen, A.
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Differential Inclusions and Quasi-Lyapunov Functions
Proceedings of the Bulgarian Academy of SciencesA sufficient condition for existence of a solution of a differential inclusion with a uniformly bounded right-hand side that has nonempty closed (possibly nonconvex) values is obtained. An Olech-type result is obtained as a corollary. An example, which originates from the Fuller problem from optimal control theory, is given to demonstrate the ...
Ivanov, Martin +2 more
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Power spectrum and diffusion of the Amari neural field
, 2019 We study the power spectrum of a space-time dependent neural field which describes the average membrane potential of neurons in a single layer. This neural field is modelled by a dissipative integro-differential equation, the so-called Amari equation. By
Salasnich, Luca
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Clinical Insights Into Hypercalcemia of Malignancy in Childhood
Pediatric Blood &Cancer, EarlyView.ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley +1 more source
Advances in Difference Equations, 2020 In this research work, the finite-time synchronization and adaptive finite-time synchronization criterion of graph theory perspective fractional-order coupled discontinuous neural networks (FCDNNs) are investigated under two different control strategies.
A. Pratap +4 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine +14 more
wiley +1 more source
Smallest Lyapunov functions of differential inclusions
Differential and Integral Equations, 1989 This paper provides a first answer to the question: does there exist a smallest Lyapunov function of a differential inclusion larger than a given function. For that purpose, they have to be looked for in the class of lower semicontinuous functions, and thus, the concept of derivative has to be replaced by the one of contingent epi-derivative to ...
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