A necessary and sufficient criterion to guarantee feasibility of the interval Gaussian algorithm for a class of matrices

Günter Mayer; Lars Pieper

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Eigenvalue frequency and consistent sign pattern matrices

Carolyn A. Eschenbach, Frank J. Hall, Zhongshan Li (1994)

Czechoslovak Mathematical Journal

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The divergence theorem and Perron integration with exceptional sets

Wolfgang B. Jurkat (1993)

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Co-solutions of algebraic matrix equations and higher order singular regular boundary value problems

Lucas Jódar, Enrique A. Navarro (1994)

Applications of Mathematics

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In this paper we obtain existence conditions and a closed form of the general solution of higher order singular regular boundary value problems. The approach is based on the concept of co-solution of algebraic matrix equations of polynomial type that permits the treatment of the problem without considering an extended first order system as it has been done in the known literature.