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 # gem-graph is for: GE-ometric directed M-ulti-GRAPH
 
 . A geometric graph is a graph whose nodes have coordinates in a space
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 . A graph is directed if its bonds are arrows
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 . It is a multigraph if several arrows can be stacked from one node to another one
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 . Note that 'directed' does not means 'oriented': a graph is oriented if one of its nodes is its root
 
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 Geometric directed multigraphs have properties that make them suitable for the representation of complex phenomena,
 especially those where numerous different objects and types of interactions are involved.
 
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 gem-graph is a software that enables modelling with a geometric directed multigraph.
 
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 today (28-03-2011) there are two main parts in this text:
 * questions about the [architecture](architecture.md): identification and naming of the main parts of this program
 * and a more [theoretical text](theory.md) : Rewritten Geometric Directed Multigraphs Properties. (JS dec 2017) that could be a starting point for a publication