The natural bijective correspondence between MV-algebras and pseudorings is generalized to the case of pseudoMV-algebras. We first introduce the concepts of noncommutative pseudorings and strong pseudo De Morgan algebras. Then, we show that they both correspond to pseudo MV-algebras via symmetric difference in a natural bijective way.

The aim of this paper is to study cryptographic systems defined as algebras (A,+ α ,+ β , p, s) of type (2, 2, 0, 0) satisfying the axiom (x + α p) + β s = x for all x ∈ A. Some standard and non-standard examples of such systems are given. In particular, we study the systems for which + α = + β = + and p = s where the operation + is the addition operation of a generalized Boolean quasiring (GBQ...

A novel magnetic interference effect is proposed for a neutral, but polarizable exciton in a quantum ring with a finite width. The magnetic interference effect originates from the nonzero dipole moment in the exciton. The ground state of exciton acquires a nonzero angular momentum with increasing normal magnetic field. This leads to the suppression of the photoluminescence in defined windows of...

We present a systematic numerical study, validated by accompanied experimental data, of individual and coupled split ring resonators (SRRs) of a single rectangular ring with one, two and four gaps. We discuss the behavior of the magnetic resonance frequency, the magnetic field and the currents in the SRRs, as one goes from a single SRR to strongly interacting SRR pairs in the SRR plane. We show...

A remarkable morphological change of self-assembled InAs quantum dots takes place during growth if a pause is introduced after overgrowing the dots with a few nm of GaAs. Atomic force microscopy indicates that the shape of the dots changes lens-like to ring-like. We report here the results of capacitance and interband transmission experiments on such ring-like structures embedded in a GaAs matr...

The title compounds, C22H22N4 and C24H26N4O2 [alternative names: 2,6-dibenzyl-2,3,6,7-tetrahydro-1H,5H-dipyrrolo[3,4-b; 3',4'-e]pyrazine and 2,6-bis(4-methoxybenzyl)-2,3,6,7-tetrahydro-1H,5H-dipyrolo[3,4-b;3',4'-e]pyrazine], two 1,2,3,5,6,7-hexahydro-2,4,6,8-tetraaza-s-indacene derivatives, are both centrosymmetric and have similar S-shaped structures. In the former, there are two independent m...

The magnetic states and switching processes are investigated in Co and NiFe rings with lateral dimensions from the micrometer range down to sub-100 nm: Using non-intrusive imaging techniques we have directly observed the nanoscopic details of the magnetization configurations of epitaxial and polycrystalline mesoscopic ring structures with o15 nm resolution. We have found head-to-head domain wal...

Macropinocytosis is a fundamental mechanism that allows cells to take up extracellular liquid into large vesicles. It critically depends on the formation of a ring of protrusive actin beneath the plasma membrane, which develops into the macropinocytic cup. We show that macropinocytic cups in Dictyostelium are organised around coincident intense patches of PIP3, active Ras and active Rac. These ...