A homeomorphism f : X → X of a compactum X with metric d is expansive if there is c > 0 such that if x, y ∈ X and x 6= y, then there is an integer n ∈ Z such that d(f(x), f(y)) > c. In this paper, we prove that if a homeomorphism f : X → X of a continuum X can be lifted to an onto map h : P → P of the pseudoarc P , then f is not expansive. As a corollary, we prove that there are no expansive ho...

We have performed molecular dynamics simulations of solid-solid contacts lubricated by a model fluid displaying many of the properties of water, particularly its expansive freezing. Near the region where expansive freezing occurs, the lubricating film remains fluid, and the friction force decreases linearly as the shear velocity is reduced. No sign of stick-slip motion is observed, even at the ...

BACKGROUND AND AIM: Ameloblastic fibro-odontoma (AFO) is a rare, mixed odontogenic tumor that usually occurs in children and young adults with no gender predominance. Posterior mandibular region is usually involved and a painless swelling is the most common clinical feature.CASE REPORT: We here report a case of AFO in a 12-year-old girl with a complaint of a painful expansive lesion in the righ...

Let d ≥ 1, and let α be an expansive Z-action by continuous automorphisms of a compact abelian group X with completely positive entropy. Then the group ∆α(X) of homoclinic points of α is countable and dense in X, and the restriction of α to the α-invariant subgroup ∆α(X) is a Z-action by automorphisms of ∆α(X). By duality, there exists a Z-action α∗ by automorphisms of the compact abelian group...

When evaluating the sustainability of a construction project, it is important to verify influence climate uncertainty and depletion natural resources that permeate strategies make infrastructure possible, especially those associated with transportation sector, which have great potential generate environmental impacts. Thus, objective this study evaluate effect subgrade material variation, const...

Slopes of road subbase and subgrade under operation are subjected to deformation destruction while being affected by atmospheric precipitation, deicing agents temperature drops. Stabilization slopes should proceed throughout the entire life cycle road. There arose a need work out most effective durable design solution. Structures exposed external factors that cause washouts defects expansion jo...

We study expansive invertible onesided cellular automata (i.e., expansive automorphisms of onesided full shifts) and find severe dynamical and arithmetic constraints which provide partial answers to questions raised by M. Nasu [N2]. We employ the images and bilateral dimension groups, measure multipliers, and constructive combinatorial characterizations for two classes of cellular automata.

In this paper, we show that if a transitive set Λ is C-stably expansive, then Λ admits a dominated splitting.