Results 101 to 110 of about 67,579,596 (150)

International Journal of Mathematical Combinatorics, Vol.3A [PDF]

open access: yes, 2009
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx.
Mao, Linfan (Editor-in-Chief)
core   +1 more source

Enumerative combinatorics on words [PDF]

open access: yes, 2001
Generating series, also called generating functions, play an important role in combinatorial mathematics. Many enumeration problems can be solved by transferring the basic operations on sets into algebraic operations on formal series leading to a solution of an enumeration problem.
openaire   +2 more sources

Cohomology and the Combinatorics of Words for Magnus Formations

open access: yes, 2022
For a prime number $p$ and a free pro-$p$ group $G$ on a totally ordered basis $X$, we consider closed normal subgroups $G^Φ$ of $G$ which are generated by $p$-powers of iterated commutators associated with Lyndon words in the alphabet $X$. We express the profinite cohomology group $H^2(G/G^Φ)$ combinatorically, in terms of the shuffle algebra on $X ...
openaire   +3 more sources

Abstract numeration systems and combinatorics on words

open access: yes, 2010
We summary the main properties of abstract numeration systems and their links to combinatorics on words and combinatorial game ...
Rigo, Michel
core   +1 more source

Generación de curvas fractales a partir de homomorfismos entre lenguajes [con Mathematica R]

open access: yesRevista Integración, 2012
En este artículo se hace una implementación con el software Mathematica 8.0 de algunas propiedades combinatorias de la cadena o palabra de Fibonacci, la cual se puede generar a partir de la iteración de un homomorfismo entre lenguajes.
José L. Ramírez, Gustavo N. Rubiano
doaj  

Combinatorics of Hall trees and Hall words

open access: yesJournal of Combinatorial Theory, Series A, 1992
Hall bases are bases of the free Lie algebra, that can be constructed via special trees and words that are called Hall trees resp. Hall words. The author gives new combinatorial proofs of the unique factorisation of words in Hall words using a rewriting system and its properties.
openaire   +3 more sources

Combinatorics of $(m,n)$-Word Lattices

open access: yesThe Electronic Journal of Combinatorics
We study the $(m,n)$-word lattices recently introduced by V. Pilaud and D. Poliakova in their study of generalized Hochschild polytopes. We prove that these lattices are extremal and constructable by interval doublings. Moreover, we describe further combinatorial properties of these lattices, such as their cardinality, their canonical join ...
openaire   +2 more sources

Combinatorics on words: Christoffel words and repetitions in words

open access: yes, 2008
The two parts of this text are based on two series of lectures delivered by Jean Berstel and Christophe Reutenauer in March 2007 at the Centre de Recherches Mathématiques, Montréal, Canada.
Reutenauer, Christophe   +3 more
core  

Combinatorics on Words

open access: yesThe Mathematica Journal, 2010
openaire   +1 more source

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