Results 11 to 20 of about 1,399 (173)

The agreement distance of unrooted phylogenetic networks [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
A rearrangement operation makes a small graph-theoretical change to a phylogenetic network to transform it into another one. For unrooted phylogenetic trees and networks, popular rearrangement operations are tree bisection and reconnection (TBR) and ...
Jonathan Klawitter
doaj   +1 more source

Bounding the Number of Minimal Transversals in Tripartite 3-Uniform Hypergraphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2023
We focus on the maximum number of minimal transversals in 3-partite 3-uniform hypergraphs on n vertices. Those hypergraphs (and their minimal transversals) are commonly found in database applications.
Alexandre Bazin   +3 more
doaj   +1 more source

Stable gonality is computable [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2019
Stable gonality is a multigraph parameter that measures the complexity of a graph. It is defined using maps to trees. Those maps, in some sense, divide the edges equally over the edges of the tree; stable gonality asks for the map with the minimum number
Ragnar Groot Koerkamp   +1 more
doaj   +1 more source

Taking-and-merging games as rewrite games [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
This work is a contribution to the study of rewrite games. Positions are finite words, and the possible moves are defined by a finite number of local rewriting rules.
Eric DuchĂȘne   +3 more
doaj   +1 more source

The Principle of Mathematical Induction: Applications in Physical Optics

open access: yesJournal of Applied Mathematics, 2022
The bare rudiments of the principle of mathematical induction as a method of proof date back to ancient times. In the contemporary university milieu, the demonstrative scheme is taught as part of a course in discrete mathematics, set theory, number ...
Joseph Ivin Thomas
doaj   +1 more source

The agreement distance of rooted phylogenetic networks [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2019
The minimal number of rooted subtree prune and regraft (rSPR) operations needed to transform one phylogenetic tree into another one induces a metric on phylogenetic trees - the rSPR-distance.
Jonathan Klawitter
doaj   +1 more source

The Recurrence Relations in Teaching Students of Informatics

open access: yesInformatics in Education, 2010
The topic ``Recurrence relations'' and its place in teaching students of Informatics is discussed in this paper. We represent many arguments about the importance, the necessity and the benefit of studying this subject by Informatics students.
Valentin P. BAKOEV
doaj   +1 more source

Classifying textile designs using region graphs [PDF]

open access: yes, 2010
Markov random field pixel labelling is often used to obtain image segmentations in which each segment or region is labelled according to its attributes such as colour or texture.
Edwards, Keith   +7 more
core   +1 more source

Towards an Algebra for Cascade Effects [PDF]

open access: yesLogical Methods in Computer Science, 2017
We introduce a new class of (dynamical) systems that inherently capture cascading effects (viewed as consequential effects) and are naturally amenable to combinations.
Elie M. Adam   +2 more
doaj   +1 more source

An Alternate Proof of Near-Optimal Light Spanners [PDF]

open access: yesTheoretiCS
In 2016, a breakthrough result of Chechik and Wulff-Nilsen [SODA '16] established that every $n$-node graph $G$ has a $(1+\varepsilon)(2k-1)$-spanner of lightness $O_{\varepsilon}(n^{1/k})$, and recent followup work by Le and Solomon [STOC '23 ...
Greg Bodwin
doaj   +1 more source

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