Results 21 to 30 of about 212 (69)

Leanness Computation: Small Values and Special Graph Classes [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Let u and v be vertices in a connected graph G = (V, E). For any integer k such that 0 ≤ k ≤ dG (u, v), the k-slice Sk (u, v) contains all vertices x on a shortest uv-path such that dG (u, x) = k.
David Coudert   +2 more
doaj   +1 more source

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

Distribution-sensitive set multi-partitioning [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Given a set $\mathcal{S}$ with real-valued members, associated with each member one of two possible types; a multi-partitioning of $\mathcal{S}$ is a sequence of the members of $\mathcal{S}$ such that if $x,y \in \mathcal{S}$ have different types and $x <
Amr Elmasry
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

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

From branchings to flows: a study of an Edmonds' like property to arc-disjoint branching flows [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2023
An s-branching flow f in a network N = (D, u), where u is the capacity function, is a flow thatreaches every vertex in V(D) from s while loosing exactly one unit of flow in each vertex other thans.
Cláudio Carvalho   +5 more
doaj   +1 more source

Conditioned Galton-Watson trees do not grow [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
An example is given which shows that, in general, conditioned Galton-Watson trees cannot be obtained by adding vertices one by one, while this can be done in some important but special cases, as shown by Luczak and Winkler.
Svante Janson
doaj   +1 more source

An extension to overpartitions of Rogers-Ramanujan identities for even moduli [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
We investigate class of well-poised basic hypergeometric series $\tilde{J}_{k,i}(a;x;q)$, interpreting these series as generating functions for overpartitions defined by multiplicity conditions.
Sylvie Corteel   +2 more
doaj   +1 more source

Spanning trees of finite Sierpiński graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
We show that the number of spanning trees in the finite Sierpiński graph of level $n$ is given by $\sqrt[4]{\frac{3}{20}} (\frac{5}{3})^{-n/2} (\sqrt[4]{540})^{3^n}$.
Elmar Teufl, Stephan Wagner
doaj   +1 more source

Statistical Properties of Similarity Score Functions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
In computational biology, a large amount of problems, such as pattern discovery, deals with the comparison of several sequences (of nucleotides, proteins or genes for instance).
Jérémie Bourdon, Alban Mancheron
doaj   +1 more source

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