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Characterizations of gamma-AG^{**}-groupoids by the properties their gamma-ideals
Gamma-AG-groupoids Gamma ideals regular Gamma AG-groupoids
2011/1/19
In this paper we have discusses -left, -right, -bi-, -quasi-, -interior and -ideals in -AG-groupoids and regular -AG...
Some Properties of an Infinite Family of Deformations of the Harmonic Oscillator
quantum Hamiltonians superintegrability exchange operators supersymmetry
2011/2/21
In memory of Marcos Moshinsky, who promoted the algebraic study of the har-monic oscillator, some results recently obtained on an infinite family of deformations of such a system are reviewed.
In this paper, we generalize the usual notions of waves, fronts and propagation speeds in a very general setting. These new notions, which cover all usual situations,involve uniform limits, with respe...
On properties not inherited by monoids from their Schutzenberger groups
Complete rewriting systems Finitely presented groups and monoids Finiteness conditions
2011/1/20
We give an example of a monoid with finitely many left and right ideals, all of whose Sch¨utzenberger groups are presentable by finite complete rewriting systems, and so each have finite derivation ty...
Some properties of skew-symmetric distributions
central symmetry log-concavity peakedness quasi-concavity
2011/2/24
The family of skew-symmetric distributions is a wide set of probability density functions
obtained by combining in a suitable form a few components which are selectable quite freely provided some sim...
Properties of the 1/cosh(t) Laser Pulse, Supersymmetry, and the sine-Gordon Equation
Properties of the 1/cosh(t) Laser Pulse Supersymmetry sine-Gordon Equation
2011/1/21
In this Letter, we explain a well-known but little understood effect in Laser Physics: when a
two-level atom, initially in the ground state, is subjected to a 1/ cosh(t) laser pulse, it remains in th...