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Special Forums News, Links, Events and Announcements Software Releases - RSS News Not Sexy Graph State Calculator 0.1 (Default branch)
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Old 01-22-2009
Not Sexy Graph State Calculator 0.1 (Default branch)
NSGSC (Not Sexy Graph State Calculator) can calculate graph states that represent multi-qubit in quantum computing. In quantum computing, a graph state is a special type of multi-qubit state that can be represented by a graph. Each qubit is represented by a vertex of the graph, and there is an edge between every interacting pair of qubits. In particular, they are a convenient way of representing certain types of entangled states. Graph states are useful in quantum error correcting codes, entanglement measurement and purification, and for characterization of computational resources in measurement-based quantum computing models. Image

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graph::writer::xml

Graph::Writer::XML(3pm) 				User Contributed Perl Documentation				   Graph::Writer::XML(3pm)

NAME

       Graph::Writer::XML - write out directed graph as XML

SYNOPSIS

	   use Graph;
	   use Graph::Writer::XML;

	   $graph = Graph->new();
	   # add edges and nodes to the graph

	   $writer = Graph::Writer::XML->new();
	   $writer->write_graph($graph, 'mygraph.xml');

DESCRIPTION

       Graph::Writer::XML is a class for writing out a directed graph in a simple XML format.  The graph must be an instance of the Graph class,
       which is actually a set of classes developed by Jarkko Hietaniemi.

       The XML format is designed to support the Graph classes: it can be used to represent a single graph with a collection of nodes, and edges
       between those nodes.  The graph, nodes, and edges can all have attributes specified, where an attribute is a (name,value) pair, with the
       value being scalar.

METHODS

   new()
       Constructor - generate a new writer instance.

	   $writer = Graph::Writer::XML->new();

       This doesn't take any arguments.

   write_graph()
       Write a specific graph to a named file:

	   $writer->write_graph($graph, $file);

       The $file argument can either be a filename, or a filehandle for a previously opened file.

KNOWN BUGS

       Attribute values must be scalar. If they're not, well, you're on your own.

SEE ALSO

       XML::Writer
	   The perl module used to actually write out the XML.	It handles entities etc.

       Graph
	   Jarkko Hietaniemi's modules for representing directed graphs, available from CPAN under modules/by-module/Graph/

       Algorithms in Perl
	   The O'Reilly book which has a chapter on directed graphs, which is based around Jarkko's modules.

       Graph::Writer
	   The base-class for Graph::Writer::XML

AUTHOR

       Neil Bowers <neil@bowers.com>

COPYRIGHT

       Copyright (c) 2001-2012, Neil Bowers. All rights reserved.  Copyright (c) 2001, Canon Research Centre Europe. All rights reserved.

       This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-02-14						   Graph::Writer::XML(3pm)