Results 31 to 40 of about 139,243 (275)

The mass distribution of coarse particulate organic matter exported from an Alpine headwater stream [PDF]

open access: yesEarth Surface Dynamics, 2013
Coarse particulate organic matter (CPOM) particles span sizes from 1 mm, with a dry mass less than 1 mg, to large logs and entire trees, which can have a dry mass of several hundred kilograms.
J. M. Turowski   +5 more
doaj   +1 more source

Sandpiles, spanning trees, and plane duality

open access: yes, 2014
Let G be a connected, loopless multigraph. The sandpile group of G is a finite abelian group associated to G whose order is equal to the number of spanning trees in G. Holroyd et al.
Chan, Melody   +5 more
core   +2 more sources

Dominator Tree Certification and Independent Spanning Trees

open access: yes, 2012
How does one verify that the output of a complicated program is correct? One can formally prove that the program is correct, but this may be beyond the power of existing methods. Alternatively one can check that the output produced for a particular input satisfies the desired input-output relation, by running a checker on the input-output pair.
Georgiadis, Loukas, Tarjan, Robert E.
openaire   +2 more sources

Minimal spanning forests

open access: yes, 2006
Minimal spanning forests on infinite graphs are weak limits of minimal spanning trees from finite subgraphs. These limits can be taken with free or wired boundary conditions and are denoted FMSF (free minimal spanning forest) and WMSF (wired minimal ...
Lyons, Russell   +2 more
core   +5 more sources

Feynman graph polynomials [PDF]

open access: yes, 2010
The integrand of any multi-loop integral is characterised after Feynman parametrisation by two polynomials. In this review we summarise the properties of these polynomials.
Belkale P.   +22 more
core   +1 more source

On Independent [1, 2]-Sets in Trees

open access: yesDiscussiones Mathematicae Graph Theory, 2018
An [1, k]-set S in a graph G is a dominating set such that every vertex not in S has at most k neighbors in it. If the additional requirement that the set must be independent is added, the existence of such sets is not guaranteed in every graph.
Aleid Sahar A.   +2 more
doaj   +1 more source

Determinantal probability measures [PDF]

open access: yes, 2002
Determinantal point processes have arisen in diverse settings in recent years and have been investigated intensively. We study basic combinatorial and probabilistic aspects in the discrete case.
Lyons, Russell
core   +5 more sources

Universal and nonuniversal allometric scaling behaviors in the visibility graphs of world stock market indices

open access: yes, 2009
The investigations of financial markets from a complex network perspective have unveiled many phenomenological properties, in which the majority of these studies map the financial markets into one complex network.
Jiang, Zhi-Qiang   +2 more
core   +1 more source

Simplicial and Cellular Trees [PDF]

open access: yes, 2015
Much information about a graph can be obtained by studying its spanning trees. On the other hand, a graph can be regarded as a 1-dimensional cell complex, raising the question of developing a theory of trees in higher dimension.
Duval, Art M.   +2 more
core   +2 more sources

Meta‐analysis fails to show any correlation between protein abundance and ubiquitination changes

open access: yesFEBS Open Bio, EarlyView.
We analyzed over 50 published proteomics datasets to explore the relationship between protein levels and ubiquitination changes across multiple experimental conditions and biological systems. Although ubiquitination is often associated with protein degradation, our analysis shows that changes in ubiquitination do not globally correlate with changes in ...
Nerea Osinalde   +3 more
wiley   +1 more source

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