Expression for a general element of an matrix.
Janaki, T.M., Rangarajan, Govindan (2003)
International Journal of Mathematics and Mathematical Sciences
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Displaying similar documents to “On a combinatorical problem”
Expression for a general element of an matrix.
A method of inverting matrices
Olga Porkorná (1970)
Aplikace matematiky
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Factorability of general symmetric matrices
Rufus Oldenburger (1940)
Compositio Mathematica
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Restricted estimation in unbalanced factorial models: an APL programs package.
José M. Prieto, José M. Caridad (1988)
Qüestiió
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This paper describes a set of programs that provide researchers with restricted effect estimations in unbalanced factorial models when several weighing systems are imposed upon those models. The main program performing such an analysis is known as REUFM, and is written in APL⊗PLUS for IBM/PC microcomputers. An example is given in order to ilustrate the programs.
On a nonnegative irreducible matrix that is similar to a positive matrix
Raphael Loewy (2012)
Open Mathematics
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Let A be an n×n irreducible nonnegative (elementwise) matrix. Borobia and Moro raised the following question: Suppose that every diagonal of A contains a positive entry. Is A similar to a positive matrix? We give an affirmative answer in the case n = 4.
Inequalities involving immanants and diagonal products for H-matrices and positive definite matrices
Johnson, Charles R., Merris, Russell, Pierce, Stephen (1985-1986)
Portugaliae mathematica
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Lappo-Danilevskij systems and their place among linear systems.
Mazanik, S.A. (1998)
Memoirs on Differential Equations and Mathematical Physics
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