Results 21 to 30 of about 4,979,723 (296)

Pinch Analysis Approach for Segregated Targeting Networks with Forbidden Matches

open access: yesChemical Engineering Transactions, 2022
Conservation of different resources is an important prerequisite toward overall sustainable development. Pinch Analysis has evolved over the years to address resource conservations in various resource allocation networks (RANs).
Sheetal Jain   +3 more
doaj   +1 more source

Set Families with a Forbidden Subposet [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2009
We asymptotically determine the size of the largest family $\cal F$ of subsets of $\{1,\dots,n\}$ not containing a given poset $P$ if the Hasse diagram of $P$ is a tree. This is a qualitative generalization of several known results including Sperner's theorem.
openaire   +3 more sources

On forbidden sets

open access: yesJournal of Difference Equations and Applications, 2015
In recent literature there are an increasing number of papers where the forbidden sets of difference equations are computed. We review and complete different attempts to describe the forbidden set and propose new perspectives for further research and a list of open problems in this field.
Balibrea, Francisco, Cascales, Antonio
openaire   +2 more sources

Tree in forbidden triples generating a finite set of graphs with high connectivity

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
For a graph and a set of connected graphs, is said be -free if does not contain any member of as an induced subgraph. For , we let denote the set of all -connected -free graphs.
Yoshimi Egawa, Zhixian Zhao
doaj   +1 more source

Compact Forbidden-Set Routing [PDF]

open access: yes, 2007
We study labelling schemes for X-constrained path problems. Given a graph (V,E) and X ⊆ V, a path is X-constrained if all intermediate vertices avoid X. We study the problem of assigning labels J(x) to vertices so that given {J(x) : x ∈ X} for any X ⊆ V, we can route on the shortest X-constrained path between x, y ∈ X.
Bruno Courcelle, Andrew Twigg
openaire   +1 more source

Non-blocking supervisory control for initialised rectangular automata [PDF]

open access: yes, 2004
We consider the problem of supervisory control for a class of rectangular automata and more specifically for compact rectangular automata with uniform rectangular activity, i.e. initialised.
Spathopoulos, Michael P.
core   +3 more sources

Optimal Offering Strategy of a Price-Maker Hydro Producer Considering the Effects of Crossing the Forbidden Zones

open access: yesIEEE Access, 2020
The phenomenon of crossing the forbidden zone is unavoidable and wasteful when scheduling the hydro units. In this paper, the effect of crossing the forbidden zone is taken into account using the strategic offering model to help the price-maker hydro ...
Chen Zhang, Wei Yan
doaj   +1 more source

Set families with a forbidden pattern

open access: yesEuropean Journal of Combinatorics, 2017
15 ...
Ilan Karpas, Eoin Long
openaire   +4 more sources

Cops and robbers on graphs with a set of forbidden induced subgraphs [PDF]

open access: yesTheoretical Computer Science, 2020
It is known that the class of all graphs not containing a graph $H$ as an induced subgraph is cop-bounded if and only if $H$ is a forest whose every component is a path. In this study, we characterize all sets $\mathscr{H}$ of graphs with some $k\in \mathbb{N}$ bounding the diameter of members of $\mathscr{H}$ from above, such that $\mathscr{H}$-free ...
Masood Masjoody, Ladislav Stacho
openaire   +4 more sources

Samples of geometric random variables with multiplicity constraints [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
We investigate the probability that a sample $\Gamma=(\Gamma_1,\Gamma_2,\ldots,\Gamma_n)$ of independent, identically distributed random variables with a geometric distribution has no elements occurring exactly $j$ times, where $j$ belongs to a specified
Margaret Archibald, Arnold Knopfmacher
doaj   +1 more source

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