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Topic: Graph


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In the News (Wed 15 Feb 12)

  
  Graph drawing - Wikipedia, the free encyclopedia
As a branch of Graph theory, Graph drawing applies topology and geometry to derive visual and haptic representations of graphs.
Graph drawing is motivated by applications that require visualization, navigation, fabrication, or beauty of its physical or conceptual artifacts that have been embedded into a graph's structure.
Graphs are usually represented pictorially using dots to represent vertexes, and arcs to represent the edges between connected vertexes.
en.wikipedia.org /wiki/Graph_drawing   (450 words)

  
 Graph theory - Open Encyclopedia   (Site not responding. Last check: 2007-10-22)
Graph theory is the branch of mathematics that examines the properties of graphs.
Informally, a graph is a set of objects called vertices (or nodes) connected by links called edges (or arcs).
Every graph gives rise to a matroid, but in general the graph cannot be recovered from its matroid, so matroids are not truly generalizations of graphs.
open-encyclopedia.com /Graph_theory   (881 words)

  
 AllRefer.com - graph (Mathematics) - Encyclopedia
The graph of a function y=f (x) is the set of points with coordinates [x, f (x)] in the xy-plane, when x and y are numbers.
Statistics makes extensive use of both line graphs and bar graphs, in which the lengths of the various bars show the quantities to be compared.
Graph is also a mathematical term used in combinatorics to designate a geometric object consisting of vertices and edges (joining pairs of vertices).
reference.allrefer.com /encyclopedia/G/graph.html   (215 words)

  
 graph on Encyclopedia.com
The graph of a function y = f (x) is the set of points with coordinates [ x, f (x)] in the xy -plane, when x and y are numbers.
The relation between student attitudes toward graphs and performance in economics.
The Resulting Graph This graph was computed from the lines of code above and is an example that might be used in.
www.encyclopedia.com /html/g1/graph.asp   (572 words)

  
 Learn more about Graph theory in the online encyclopedia.   (Site not responding. Last check: 2007-10-22)
A graph with 6 vertices and 7 edges.
For more and formal definitions, see Glossary of graph theory and Graph (mathematics).
Depending on the applications, edges may or may not have a direction; edges joining a vertex to itself may or may not be allowed, and vertices and/or edges may be assigned weights, i.e.
www.onlineencyclopedia.org /g/gr/graph_theory.html   (486 words)

  
 Encyclopedia of Sparse Graph Codes
This is a database of sparse graph codes.
Properties recorded include the codes' parity check matrices, their rates and minimum distances, their empirical performance on the binary input Gaussian noise channel, and histograms of decoding times.
This is Margulis's Cayley graph construction with p=11.
www.inference.phy.cam.ac.uk /mackay/codes/data.html   (1310 words)

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