Vol. 51 No. 4 (2011)

Published: 2011-01-04

Rational Approximation to the Solutions of Two-Point Boundary Value Problems

P. Amore, F. M. Fernández
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Coquaternionic Quantum Dynamics for Two-level Systems

D. C. Brody, E. M. Graefe
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Perturbation Theory for PT-Symmetric Sinusoidal Optical Lattices at the Symmetry-Breaking Threshold

H. F. Jones
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Two Remarks to Bifullness of Centers of Archimedean Atomic Lattice Effect Algebras

M. Kalina
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Singularities in Structural Optimization of the Ziegler Pendulum

O. N. Kirillov
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Erlangen Programme at Large 3.2 Ladder Operators in Hypercomplex Mechanics

V. V. Kisil
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Dynamical Symmetry Breaking in RN Quantum Gravity

A. T. Kotvytskiy, D. V. Kruchkov
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Ito-Sadahiro numbers vs. Parry numbers

Z. Masáková, E. Pelantová
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More on PT-Symmetry in (Generalized) Effect Algebras and Partial Groups

J. Paseka, J. Janda
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Extensions of Effect Algebra Operations

Z. Riečanová, M. Zajac
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Effect Algebras of Positive Self-adjoint Operators Densely Defined on Hilbert Spaces

Z. Riečanová
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Path Integrals for (Complex) Classical and Quantum Mechanics

R. J. Rivers
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Polynomial Solutions of the Heun Equation

B. Shapiro, M. Tater
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Exceptional Points for Nonlinear Schroedinger Equations Describing Bose-Einstein Condensates of Ultracold Atomic Gases

G. Wunner, H. Cartarius, P. Koeberle, J. Main, S. Rau
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The Horizons of Observability in PT-symmetric Four-site Quantum Lattices

M. Znojil
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