Let R be a commutative ring. It is well known that any artinian module is co-hopfian and any artinian module is mono-correct, but the converse is not true. Furthermore, commutative rings on which co-hopfian modules are artinian have been characterized. The aim of this work is to...
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Research Article10.9734/BJMCS/2013/3962
The paper analyses transmission lines terminated by nonlinear loads situated as follows: GC-loads are connected parallel and L-load is connected in series to them (Fig. 1). First, we formulate boundary conditions for a lossless transmission line system on the basis of Kirchhoff’s...
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Research Article10.9734/BJMCS/2013/3622
This note suggests that near earth objects and Central Force Optimization have something in common, that NEO theory may hold the key to solving some vexing problems in deterministic optimization: local trapping and proof of convergence. CFO analogizes Newton’s laws to locate the...
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Research Article10.9734/BJMCS/2013/3400
In this paper, necessary and sufficient conditions are obtained so that the neutral functional difference equation $$\Delta^{m}\big(y_n-y_{\tau(n)}\big) + q_nG(y_{\sigma(n)})=f_n,\quad n\geq n_0,$$ admits a positive bounded solution, where $$m \geq 1$$ is an odd integer, $$\Delta...
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Research Article10.9734/BJMCS/2013/3481
H. Vazquez-Leal, A. Sarmiento-Reyes, U. Filobello-Nino, Y. Khan, A. L. Herrera-May, R. Castaneda-Sheissa, V. M. Jimenez-Fernandez, M. Vargas-Dorame & J. Sanchez-Orea·Journal of Advances in Mathematics and Computer Science·2013
The increase of complexity on integrated circuits has also raised the demand for new testing methodologies capable to detect functional failures within circuits before they reach the market. Hence, this work proposes to explore the use of homotopy as a tool for testing a basic an...
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Research Article10.9734/BJMCS/2013/3116
Central Force Optimization is a deterministic metaheuristic for an evolutionary algorithm that searches a decision space by flying probes whose trajectories are computed using a gravitational metaphor. CFO benefits from the inclusion of a pseudorandom component (a numerical seque...
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Research Article10.9734/BJMCS/2013/3381
In this paper, the bounds for convex combination of the first Seiffert and Logarithmic means by general Heronian mean are proved, where The left bound is the best possible.
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Research Article10.9734/BJMCS/2013/3049
We consider the braid group on three strands, B3and construct a complex valued representation of it with degree 6, namely, First, we show that this representation is irreducible and not equivalent to either Burau or Krammer’s representations. Second, we prove that the representa...
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Research Article10.9734/BJMCS/2013/3141
The existence of at least three weak solutions is established for a class of quasilinear elliptic systems involving the (p(x); q(x))-biharmonic operators with Navier boundary value conditions. The technical approach is mainly based on a three critical points theorem due to Riccer...
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Research Article10.9734/BJMCS/2013/3166
The problem of defining products of distributions is a difficult and not completely understood problem, studied from several points of views since Schwartz established the theory of distributions around 1950. Many fields, such as wave propagation or quantum mechanics, require such m...
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Research Article10.9734/BJMCS/2013/2721