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Interval Mathematics Applied to Critical Point Transitions [PDF]

open access: hybridRevista de Matemática: Teoría y Aplicaciones, 2012
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
Benito A. Stradi
doaj   +5 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
openalex   +4 more sources

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

open access: greenPhysics Reports
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 ...
Domingos H. U. Marchetti   +2 more
openalex   +3 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
openalex   +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 ...
Ayşe Hümeyra Bilge, Önder Pekcan
openalex   +5 more sources

Comparing Teaching Methods of Mathematics at University Level

open access: yesEducation Sciences, 2019
According to the views of social constructivism, learning takes place when individuals engage socially to talk about and act on shared problems or interests.
Michael Voskoglou
doaj   +2 more sources

COMPARATIVE ANALYSIS OF MATHEMATICAL MODELS FOR DETERMINING CRITICAL POINT TEMPERATURES OF ECONOMICALLY ALLOYED STEELS

open access: bronzeModern Problems of Metalurgy
The problem of determining the temperatures of critical points of phase transformations in steels remains relevant due to the need to ensure high accuracy in assigning heat treatment modes. It is known that the position of critical points is largely determined by the chemical composition of the steel, in particular the content of alloying elements. The
О. І. Babachenko   +4 more
openalex   +2 more sources

MATHEMATICAL MODELING OF THE ASYMPTOTIC NEAR THE CRITICAL POINT

open access: goldScientific and Technical Volga region Bulletin, 2016
С. В. Рыков   +3 more
openalex   +2 more sources

Sharp hierarchical upper bounds on the critical two-point function for long-range percolation on Zd [PDF]

open access: yesJournal of Mathematics and Physics, 2022
Consider long-range Bernoulli percolation on [Formula: see text] in which we connect each pair of distinct points x and y by an edge with probability 1 − exp(− β‖ x − y‖− d− α), where α > 0 is fixed and β ⩾ 0 is a parameter.
Tom Hutchcroft
semanticscholar   +1 more source

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