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Combinatorial parameters in bargraphs
Quaestiones Mathematicae, 2016 Bargraphs are non-intersecting lattice paths in N2 0 with 3 allowed types of steps; up (0, 1), down (0,−1) and horizontal (1, 0). They start at the origin with an up step and terminate immediately upon return to the x-axis.
Charlotte Brennan +2 more
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2012
Object of study in this paper are the Hurwitz numbers. They were introduced by Hurwitz in the end of nineteenth century and still they are of great interest. The Hurwitz numbers are important in topology because they enumerate ramified coverings of two-dimensional surfaces, but not only.
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Object of study in this paper are the Hurwitz numbers. They were introduced by Hurwitz in the end of nineteenth century and still they are of great interest. The Hurwitz numbers are important in topology because they enumerate ramified coverings of two-dimensional surfaces, but not only.
openaire +1 more source
Are the Catalan Numbers a Linear Recurrence Sequence?
American Mathematical Monthly, 2022Martin Klazar
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Algebraic aspects of increasing subsequences
Duke Mathematical Journal, 2001Jinho Baik, Eric M Rains
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Enumeration of permutations and sequences with restrictions
Duke Mathematical Journal, 1973Richard Scoville
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