Results 1 to 10 of about 70,780 (208)

Combinatorics and Geometry of Transportation Polytopes: An Update [PDF]

open access: yes, 2013
A transportation polytope consists of all multidimensional arrays or tables of non-negative real numbers that satisfy certain sum conditions on subsets of the entries.
De Loera, Jesús A., Kim, Edward D.
core  

On the spectral dimension of random trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
We determine the spectral dimensions of a variety of ensembles of infinite trees. Common to the ensembles considered is that sample trees have a distinguished infinite spine at whose vertices branches can be attached according to some probability ...
Bergfinnur Durhuus   +2 more
doaj   +1 more source

Combinatorics in the Art of the Twentieth Century [PDF]

open access: yes, 2017
This paper is motivated by a question I asked myself: How can combinatorial structures be used in a work of art? Immediately, other questions arose: Whether there are artists that work or think combinatorially?
Barrière Figueroa, Eulalia
core  

Formalizing the transformations of a cognitive universe [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
In an effort to continue the pioneering work of Harary in USA and Flament in France, we have undertaken to develop, on an experimental basis, a formalized theory of systems of beliefs and their modifications.
N. Lafaye de Micheaux   +3 more
doaj   +1 more source

Unimodality Problems in Ehrhart Theory

open access: yes, 2017
Ehrhart theory is the study of sequences recording the number of integer points in non-negative integral dilates of rational polytopes. For a given lattice polytope, this sequence is encoded in a finite vector called the Ehrhart $h^*$-vector. Ehrhart $h^*
A. Stapledon   +45 more
core   +1 more source

Enumeration and Random Generation of Concurrent Computations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
In this paper, we study the shuffle operator on concurrent processes (represented as trees) using analytic combinatorics tools. As a first result, we show that the mean width of shuffle trees is exponentially smaller than the worst case upper-bound.
Olivier Bodini   +2 more
doaj   +1 more source

Polyominoes determined by permutations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
In this paper we consider the class of $\textit{permutominoes}$, i.e. a special class of polyominoes which are determined by a pair of permutations having the same size. We give a characterization of the permutations associated with convex permutominoes,
I. Fanti   +4 more
doaj   +1 more source

A Coding Theoretic Study on MLL proof nets

open access: yes, 2010
Coding theory is very useful for real world applications. A notable example is digital television. Basically, coding theory is to study a way of detecting and/or correcting data that may be true or false. Moreover coding theory is an area of mathematics,
Girard   +4 more
core   +1 more source

Label-based parameters in increasing trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
Grown simple families of increasing trees are a subclass of increasing trees, which can be constructed by an insertion process. Three such tree families contained in the grown simple families of increasing trees are of particular interest: $\textit ...
Markus Kuba, Alois Panholzer
doaj   +1 more source

Decomposition spaces in combinatorics [PDF]

open access: yes, 2016
A decomposition space (also called unital 2-Segal space) is a simplicial object satisfying an exactness condition weaker than the Segal condition: just as the Segal condition expresses (up to homotopy) composition, the new condition expresses ...
Gálvez Carrillo, Maria Immaculada   +2 more
core   +1 more source

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