Results 31 to 40 of about 361,091 (296)

The partition dimension of a subdivision of a homogeneous firecracker

open access: yesElectronic Journal of Graph Theory and Applications, 2020
Finding the partition dimension of a graph is one of the interesting (and uncompletely solved) problems of graph theory. For instance, the values of the partition dimensions for most kind of trees are still unknown.  Although for several classes of trees
Amrullah Amrullah
doaj   +1 more source

The lattice of integer partitions

open access: yesDiscrete Mathematics, 1973
AbstractIn this paper we study the lattice Ln of partitions of an integer n ordered by dominance. We show Ln to be isomorphic to an infimum subsemilattice under the component ordering of certain concave nondecreasing (n+1)-tuples. For Ln, we give the covering relation, maximal covering number, minimal chains, infimum and supremum irreducibles, a chain ...
openaire   +2 more sources

Optimization Strategy for Black-Start Partitioning of Active Distribution Network to Minimize Customer Outage Cost

open access: yesZhongguo dianli, 2020
When power system blackout occurs, the active distribution network with high penetration of distributed generations can realize fast parallel restoration through zone partitioning.
Jinquan ZHAO   +3 more
doaj   +1 more source

Partition and composition matrices: two matrix analogues of set partitions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
This paper introduces two matrix analogues for set partitions; partition and composition matrices. These two analogues are the natural result of lifting the mapping between ascent sequences and integer matrices given in Dukes & Parviainen (2010).
Anders Claesson   +2 more
doaj   +1 more source

Maximum entropy and integer partitions

open access: yesCombinatorial Theory, 2023
We derive asymptotic formulas for the number of integer partitions with given sums of $j$th powers of the parts for $j$ belonging to a finite, non-empty set $J \subset \mathbb N$. The method we use is based on the `principle of maximum entropy' of Jaynes.
Gweneth McKinley   +2 more
openaire   +4 more sources

Strategies for Parallelization of Algorithms for Integer Partition

open access: yesAlgorithms
In this work we present strategies for parallelization of algorithms for representing integers as a sum of positive integers using OpenMP (Open Multi-Processing).
Iliya Bouyukliev   +2 more
doaj   +1 more source

On Partitions and Arf Semigroups

open access: yesOpen Mathematics, 2019
In this study we examine some combinatorial properties of the Arf semigroup. In previous work, the author and Karakaş, Gümüşbaş defined an Arf partition of a positive integer n. Here, we continue this work and give new results on Arf partitions.
Tutaş Nesrin
doaj   +1 more source

Integer Partitions with Fixed Subsums [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2005
Given two positive integers $m\le n$, we consider the set of partitions $\lambda=(\lambda_1,\dots,\lambda_\ell,0,\dots)$, $\lambda_1\ge\lambda_2\ge\dots$, of $n$ such that the sum of its parts over a fixed increasing subsequence $(a_j)$ is $m$: $\lambda_{a_1}+\lambda_{a_2}+\dots=m$. We show that the number of such partitions does not depend on $n$ if $
openaire   +4 more sources

FastNano Liquid: An Automated Platform for Small‐Angle X‐ray Scattering‐Based Materials Discovery

open access: yesAdvanced Engineering Materials, EarlyView.
We present FastNano Liquid, an automated small‐ and wide‐angle X‐ray scattering platform for the combined synthesis and characterization of (nano)materials. The platform is coupled to varied reactor workflows for both in situ studies of reaction kinetics and ex situ screening of synthesis conditions to support machine learning‐guided exploration ...
Pierre‐Baptiste Flandrin   +16 more
wiley   +1 more source

Stochastic Theory of Discrete Binary Fragmentation—Kinetics and Thermodynamics

open access: yesEntropy, 2022
We formulate binary fragmentation as a discrete stochastic process in which an integer mass k splits into two integer fragments j, k−j, with rate proportional to the fragmentation kernel Fj,k−j.
Themis Matsoukas
doaj   +1 more source

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