Aztec diamonds and Baxter permutations.
Canary, Hal (2010)
The Electronic Journal of Combinatorics [electronic only]
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Displaying similar documents to “Generating functions for the number of permutations with limited displacement.”
Aztec diamonds and Baxter permutations.
Some new formulas for .
Almkvist, Gert, Krattenthaler, Christian, Petersson, Joakim (2003)
Experimental Mathematics
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Computing the determinants by reducing the orders by four.
Gjonbalaj, Qefsere, Salihu, Armend (2010)
Applied Mathematics E-Notes [electronic only]
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Pattern avoidance in matrices.
Kitaev, Sergey, Mansour, Toufik, Vella, Antoine (2005)
Journal of Integer Sequences [electronic only]
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Indecomposable (1,3)-groups and a matrix problem
David M. Arnold, Adolf Mader, Otto Mutzbauer, Ebru Solak (2013)
Czechoslovak Mathematical Journal
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Almost completely decomposable groups with a critical typeset of type and a -primary regulator quotient are studied. It is shown that there are, depending on the exponent of the regulator quotient , either no indecomposables if ; only six near isomorphism types of indecomposables if ; and indecomposables of arbitrary large rank if .
Small forbidden configurations. II.
Anstee, Richard, Ferguson, Ron, Sali, Attila (2001)
The Electronic Journal of Combinatorics [electronic only]
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A bijective proof of Borchardt's identity.
Singer, Dan (2004)
The Electronic Journal of Combinatorics [electronic only]
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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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Finite row-column exchangeable arrays.
Bassan, Bruno, Scarsini, Marco (1998)
Commentationes Mathematicae Universitatis Carolinae
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Small forbidden configurations. III.
Anstee, R.P., Kamoosi, N. (2007)
The Electronic Journal of Combinatorics [electronic only]
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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.