– The dynamics of a particle in a symmetric periodic potential under the influence of a time-periodic field is characterized by a mixed phase space with regular and chaotic components. An additional external dc bias transforms the chaotic manifold into a domain with unbounded acceleration. We study the stationary transport which originates from the persisting invariant manifolds (regular island...

Introduction: Oxygenated water intake can increase cell death markers by increasing free radicals; however, sport activities and antioxidant substances can prevent some symptoms of free radical production. The purpose of this study was to investigate the effect of endurance training (ET) and purslane (portulaca oleracea) seed (PO) consumption on cytochrome-C and malondialdehyde...

In this paper, we first consider (po-)torsion free and principally weakly (po-)flat $S$-posets, specifically  we discuss when (po-)torsion freeness implies principal weak (po-)flatness. Furthermore, we give a counterexample to show that Theorem 3.22 of Shi is incorrect. Thereby we present a correct version of this theorem. Finally, we characterize pomonoids over which all cyclic $S$-posets are ...

Many formal models have been proposed to recognize or to generate two-dimensional words. In this paper, we focus our analysis on (regular) pure 2D context-free grammars, regional tile grammars and Pr̊uša grammars, showing that nevertheless they have been proposed as a generalization of string context free grammars their expressiveness is different. This work refines the relationship among the cl...

Sufficient conditions for pure-strategy Nash equilibria of finite games to be Ž . Lyapunov stable under a large class of evolutionary dynamics, the regular monotonic selection dynamics, are discussed. In particular, it is shown that in almost all finite extensive-form games, all the pure-strategy equilibria are stable. In such games, all mixed-strategy equilibria close to pure-strategy equilibr...

We extend a result of Cisinski on the construction of cofibrantly generated model structures from (Grothendieck) toposes to locally presentable categories and from monomorphism to more general cofibrations. As in the original case, under additional conditions, the resulting model structures are ”left determined” in the sense of Rosický and Tholen.

The aim of this paper is to show several iso morphic structures between fuzzy relations and operators from the family of fuzzy sets into itself In particular we prove that the preorders family is able to embed itself in the class of fuzzy consequence operators by way of a lattice monomorphism

It has been known that regular model sets are pure point diffractive. But the converse has been a conjecture. We show here that the converse is also true for substitution point sets without the condition of regularity, that is to say, substitution point sets are model sets if and only if they are pure point diffractive. We introduce a new notion of coincidence which connects model sets and pure...

Let A and C be two unital simple C*-algebras with tracial rank zero. Suppose that C is amenable and satisfies the Universal Coefficient Theorem. Denote by KKe(C,A) ++ the set of those κ for which κ(K0(C)+ \ {0}) ⊂ K0(A)+ \ {0} and κ([1C ]) = [1A]. Suppose that κ ∈ KKe(C,A) . We show that there is a unital monomorphism φ : C → A such that [φ] = κ. Suppose that C is a unital AH-algebra and λ : T(...

BACKGROUND In vitro maturation (IVM) of immature oocytes retrieved from unstimulated ovaries may avoid side effects connected to hyperstimulation during IVF procedures, including the risk of cancer recurrence. In humans, the scarce availability of immature oocytes limits morphological studies. The monovular ovine may represent an experimental model for IVM studies. METHODS To assess if the sc...