Results 31 to 40 of about 96,122 (257)

Local invertibility and sensitivity of atomic structure-feature mappings [version 1; peer review: 2 approved]

open access: yesOpen Research Europe, 2021
Background: The increasingly common applications of machine-learning schemes to atomic-scale simulations have triggered efforts to better understand the mathematical properties of the mapping between the Cartesian coordinates of the atoms and the variety
Sergey N. Pozdnyakov   +4 more
doaj   +1 more source

First integrals and phase portraits of planar polynomial differential cubic systems with invariant straight lines of total multiplicity eight

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
In the article [C. Bujac, J. Llibre, N. Vulpe, Qual. Theory Dyn. Syst. 15(2016), 327–348] for the family of cubic differential systems with the maximum number of invariant straight lines, i.e.
Cristina Bujac, Nicolae Vulpe
doaj   +1 more source

Landau-Ginzburg skeletons

open access: yesJournal of High Energy Physics, 2017
We study the class of indecomposable two-dimensional Landau-Ginzburg theories with (2,2) supersymmetry and central charge c < 6 with the aim of classifying all such theories up to marginal deformations.
Ian C. Davenport, Ilarion V. Melnikov
doaj   +1 more source

Sustainable bioplastics manufacturing from renewable sources

open access: yesFEBS Open Bio, EarlyView.
Bioplastics are manufactured by using polymers from different bio‐based sources. These novel materials not only offer biodegradability but also possess various functional properties that make them suitable for diverse applications. Recent developments in the preparation of bioplastics are reported, highlighting the distinct properties of each type of ...
C. Valeria L. Giosafatto   +6 more
wiley   +1 more source

Classification of Real Solutions of the Fourth Painlevé Equation

open access: yesMathematics
Painlevé transcendents are usually considered as complex functions of a complex variable, but, in applications, it is often the real cases that are of interest.
Jeremy Schiff, Michael Twiton
doaj   +1 more source

Relating amplitude and PDF factorisation through Wilson-line geometries

open access: yesJournal of High Energy Physics, 2019
We study long-distance singularities governing different physical quantities involving massless partons in perturbative QCD by using factorisation in terms of Wilson-line correlators. By isolating the process-independent hard-collinear singularities from
Giulio Falcioni   +2 more
doaj   +1 more source

The family of cubic differential systems with two real and two complex distinct infinite singularities and invariant straight lines of the type $(3,1,1,1)$

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this article we consider the class $\textbf{CSL}_7^{2r2c \infty}$ of non-degenerate real planar cubic vector fields, which possess two real and two complex distinct infinite singularities and invariant straight lines of total multiplicity 7, including
Cristina Bujac   +2 more
doaj   +1 more source

Splash singularities for a general Oldroyd model with finite Weissenberg number

open access: yes, 2019
In this paper we study a 2D Oldroyd free-boundary model which describes the evolution of a viscoelastic fluid. We prove existence of splash singularities, namely points where the boundary remains smooth but self-intersects.
Di Iorio, Elena   +2 more
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Infinite randomness and quantum Griffiths effects in a classical system: the randomly layered Heisenberg magnet [PDF]

open access: yes, 2010
We investigate the phase transition in a three-dimensional classical Heisenberg magnet with planar defects, i.e., disorder perfectly correlated in two dimensions.
D. Dhar   +4 more
core   +3 more sources

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