Results 1 to 10 of about 713,701 (85)

A mathematical theory of the critical point of ferromagnetic Ising systems [PDF]

open access: greenPhysics Reports, 2023
We develop a theory of the critical point of the ferromagnetic Ising model, whose basic objects are the ergodic (pure) states of the infinite system. It proves the existence of anomalous critical fluctuations, for dimension $ν=2$ and, under a standard assumption, for $ν=3$, for the model with nearest neighbor interaction, in a way which is consistent ...
Marchetti, Domingos H. U.   +2 more
  +6 more sources

Interval Mathematics Applied to Critical Point Transitions [PDF]

open access: hybridRevista de Matemática: Teoría y Aplicaciones, 2005
The determination of critical points of mixtures is important for both practical and theoretical reasons in the modeling of phase behavior, especially at high pressure. The equations that describe the behavior of complex mixtures near critical points are highly nonlinear and with multiplicity of solutions to the critical point equations.
Benito A. Stradi
openaire   +6 more sources

Quaternions, Fréchet differentiation, and some equations of mathematical physics 1. Critical point theory [PDF]

open access: greenJournal of Mathematical Analysis and Applications, 1979
AbstractFollowing an introduction discussing some properties of maps Q → Q and Q × Q → Q, where Q denotes the ring of quaternions, it is shown that many equations of mathematical physics can be written in this formalism. A concept of Fréchet differentiation is given in this setting, in a manner analogous to the usual definition.
Vadím Komkov
openaire   +4 more sources

Mathematical modelling of color, texture kinetics and sensory attributes characterisation of ripening bananas for waste critical point determination [PDF]

open access: greenJournal of Food Engineering, 2016
Abstract It is vital to correlate the instrumental and non-instrumental analyses of food products so as to determine the product waste critical point. Texture and color (instrumental) were determined by a universal testing machine (UTM) and colorimetry respectively to ascertain the kinetics of bananas during ripening. While deterministic, descriptive
Stella Nannyonga   +4 more
openaire   +4 more sources

A MATHEMATICAL DESCRIPTION OF THE CRITICAL POINT IN PHASE TRANSITIONS

open access: closedInternational Journal of Modern Physics C, 2013
Let y(x) be a smooth sigmoidal curve, y(n) be its nth derivative and {xm,i} and {xa,i}, i = 1,2,…, be the set of points where respectively the derivatives of odd and even order reach their extreme values. We argue that if the sigmoidal curve y(x) represents a phase transition, then the sequences {xm,i} and {xa,i} are both convergent and they have a ...
Bilge, Ayse Humeyra, Pekcan, Onder
openaire   +5 more sources

MATHEMATICAL MODELING OF THE ASYMPTOTIC NEAR THE CRITICAL POINT

open access: goldScientific and Technical Volga region Bulletin, 2016
S.V. Rykov   +3 more
openaire   +2 more sources

A Mathematical Foundation for the Spatial Uncertainty of Critical Points in Probabilistic Scalar Fields

open access: yes2023 Topological Data Analysis and Visualization (TopoInVis), 2023
11 pages, 8 figures, to appear in an IEEE VGTC sponsored ...
Vietinghoff, Dominik   +3 more
openaire   +2 more sources

First-Order Comprehensive Adjoint Sensitivity Analysis Methodology for Critical Points in Coupled Nonlinear Systems. I: Mathematical Framework [PDF]

open access: yesFluids, 2021
This work presents the novel first-order comprehensive adjoint sensitivity analysis methodology for critical points (1st-CASAM-CP), which enables the exact and efficient computation of the first-order sensitivities of responses defined at critical points (maxima, minima, saddle points) of coupled nonlinear models of physical systems characterized by ...
openaire   +3 more sources

A Morse complex for infinite dimensional manifolds - Part I [PDF]

open access: yes, 2003
In this paper and in the forthcoming Part II we introduce a Morse complex for a class of functions f defined on an infinite dimensional Hilbert manifold M, possibly having critical points of infinite Morse index and coindex.
Abbondandolo   +47 more
core   +4 more sources

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