Results 21 to 30 of about 972,352 (283)

A short proof of the middle levels theorem [PDF]

open access: yes, 2018
Consider the graph that has as vertices all bitstrings of length $2n+1$ with exactly $n$ or $n+1$ entries equal to 1, and an edge between any two bitstrings that differ in exactly one bit.
Gregor, Petr   +2 more
core   +2 more sources

Relationship between chlorophyll-a, sea surface temperature, and sea surface salinity [PDF]

open access: yesGlobal Journal of Environmental Science and Management, 2023
BACKGROUND AND OBJECTIVES: This study aimed to investigate the long-term relationship between chlorophyll-a, sea surface temperature, and sea surface salinity monthly from January 2015 to December 2021.
M. Hidayat   +4 more
doaj   +1 more source

Graph equations for line graphs, total graphs, middle graphs and quasi-total graphs

open access: yesDiscrete Mathematics, 1984
Let G be a simple finite and connected graph with the vertex set V(G) and the edge set X(G). Let V'(G) be the family of all one-point subsets of V(G). Both the line graph L(G) of G and the total graph T(G) of G are standard graph theoretical concepts. The middle graph M(G) of G is the intersection graph of \(V'(G)\cup X(G)\) and the quasi-total graph P(
Sastry, D.V.S, Raju, B.Syam Prasad
openaire   +2 more sources

Proof of the middle levels conjecture [PDF]

open access: yes, 2016
Define the middle layer graph as the graph whose vertex set consists of all bitstrings of length $2n+1$ that have exactly $n$ or $n+1$ entries equal to 1, with an edge between any two vertices for which the corresponding bitstrings differ in exactly one ...
Mutze, Torsten
core   +1 more source

On the Total Graph of Mycielski Graphs, Central Graphs and Their Covering Numbers

open access: yesDiscussiones Mathematicae Graph Theory, 2013
The technique of counting cliques in networks is a natural problem. In this paper, we develop certain results on counting of triangles for the total graph of the Mycielski graph or central graph of star as well as completegraph families.
Patil H.P., Pandiya Raj R.
doaj   +1 more source

Middle School Students’ Graph Skills and Affective States about Graphs [PDF]

open access: yesInternational Journal of Research in Education and Science, 2020
This survey design study was designed to test whether the graph skills and affective states of middle school students about graphs differ by their gender, grade level, and graph types (line, bar, and pie). The data collection instruments consisted of two scales developed by the authors and a Graph Skills Test, which consisted of graph questions from ...
Murat Bursal, Serap Yetiş
openaire   +1 more source

Compiler Optimization: A Case for the Transformation Tool Contest [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2011
An optimizing compiler consists of a front end parsing a textual programming language into an intermediate representation (IR), a middle end performing optimizations on the IR, and a back end lowering the IR to a target representation (TR) built of ...
Sebastian Buchwald, Edgar Jakumeit
doaj   +1 more source

Graph Equations for Line Graphs, Jump Graphs, Middle Graphs, Splitting Graphs And Line Splitting Graphs

open access: yesMapana - Journal of Sciences, 2010
For a graph G, let G, L(G), J(G) S(G), L,(G) and M(G) denote Complement, Line graph, Jump graph, Splitting graph, Line splitting graph and Middle graph respectively. In this paper, we solve the graph equations L(G) =S(H), M(G) = S(H), L(G) = LS(H), M(G) =LS(H), J(G) = S(H), M(G) = S(H), J(G) = LS(H) and M(G) = LS(G).
B. Basavanagoud, Veena Mathad
openaire   +2 more sources

EEG Resting-State Brain Topological Reorganization as a Function of Age [PDF]

open access: yes, 2016
Resting state connectivity has been increasingly studied to investigate the effects of aging on the brain. A reduced organization in the communication between brain areas was demonstrated b y combining a variety of different imaging technologies (fMRI,
Astolfi, Laura   +5 more
core   +4 more sources

A Note on Total Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2015
Erratum Identification and corrections of the existing mistakes in the paper On the total graph of Mycielski graphs, central graphs and their covering numbers, Discuss. Math. Graph Theory 33 (2013) 361-371.
Forouhandeh S.F.   +4 more
doaj   +1 more source

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