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7 papers · 1 filter
Involutions and Trivolutions in Algebras Related to Second Duals of Group Algebras
M. Filali, M. Sangani Monfared, Ajit Iqbal Singh
We define a trivolution on a complex algebra as a non-zero conjugate-linear, anti-homomorphism on , which is a generalized inverse of itself, that is, . We give s…
A Remark on the Manhattan Distance Matrix of a Rectangular Grid
A. Y. Alfakih
Consider the Quadratic Assignment Problem (QAP): given two matrices A and D, minimize {trace AXDX^T: X is a permutation matrix}. New lower bounds were obtained recently (Mittelmann…
Quantum manipulation via atomic-scale magnetoelectric effects
Anh. T. Ngo, J. Rodriguez-Laguna, S. E. Ulloa +1
Magnetoelectric effects at the atomic scale are demonstrated to afford unique functionality. This is shown explicitly for a quantum corral defined by a wall of magnetic atoms depos…
An Amendment of Fast Subspace Tracking Methods
Zhu Cheng, Zhan Wang, Haitao Liu +1
Tuning stepsize between convergence rate and steady state error level or stability is a problem in some subspace tracking schemes. Methods in DPM and OJA class may show sparks in t…
New Coefficients For Hopf Cyclic Cohomology
Mohammad Hassanzadeh
In this note the categories of coefficients for Hopf cyclic cohomology of comodule algebras and comodule coalgebras are extended. We show that these new categories have two proper…
Universal rigidity of bar frameworks in general position: a Euclidean distance matrix approach
A. Y. Alfakih
A configuration p in r-dimensional Euclidean space is a finite collection of labeled points p^1,p^2,...,p^n in R^r that affinely span R^r. Each configuration p defines a Euclidean…