For the polynomial planar vector fields with a hyperbolic or nilpotent critical point at the origin, the monodromy problem has been solved, but for the strongly degenerate critical points this problem is still open. When the critical point is monodromic, the stability problem or the center- focus problem is an open problem too. In this paper we will consider the polynomial planar vector fields ...

The goal of this article is the analysis of Ahmadinejad government's foreign policy according to the critical theory of international relations. Whether it seems foreign policy of Mahmood Ahmadinejad, government is different from his before and after governments. Perhaps it could be provided more detailed and objective analysis from foreign policy of Islamic Republic of Iran during Ahmadinejad ...

A three-parameter cubic equation of state has been proposed for predicting PVT of pure refrigerantssuch as R236ea, R236fa, R245fa, R245ca, R218, R227ea, and R717, from freezing point up to critical pointtemperature and pressures up 650 atm. We explore the theory of the equation of state from the view pointof Ihm–Song–Mason (ISM) equation of state, which has been derived on the basis of statisti...

According to Wilson's theory of critical phenomena, critical exponents are universal functions of d, the dimension of space, and n, the dimension of the symmetry group. SO(5) theory of antiferromagnetism and superconductivity predicts a bicritical point where TN and T~ intersect. By measuring critical exponents close to the bicritical point, and knowing that d = 3, one can experimentally measur...

The same relationship holds for the interfacial tension o-i at the consolute critical point (the critical point for phase separation) of a binary fluid mixture. Up to now no rigorous theory links the interfacial tension to properties of the bulk system. However, a phenomenological approach which should be valid in the vicinity of the critical point has been developed by Fisk and Widom. 2 Accord...

Extending the results obtained in the case N odd, the effect of slightly relevant perturbations of the second parafermionic field theory with the symmetry ZN , for N even, are studied. The renormalization group equations, and their infra red fixed points exhibit the same structure in both cases. In addition to the standard flow from the p-th to the (p − 2)-th model, another fixed point correspo...

Abstract Finding common ground between theories that have never or seldom spoken is a necessary first step to bridge-building, particularly concerning their foundational bases. This article proposes develop such footing for dialogue the Marxist version of Latin American Dependency Theory (MDT) and Robert Cox’s neo-Gramscian Critical (NCT). The onto-methodological debate around agency-structure ...