directed acyclic graph
(DAG) A directed graph containing no cycles. This means
that if there is a route from node A to node B then there is
no way back.

Last updated: 1994-12-07

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directed graph
(digraph) A graph with one-way edges.

See also directed acyclic graph .

Last updated: 1994-11-11

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Directed Oc
<language > (Doc) A language related to Oc .

["Programming Language Doc and Its Self-Description, or 'X=X
Is Considered Harmful'", M. Hirata, Proc 3rd Conf Japan Soc
Soft Sci Tech, pp. 69-72, 1986].

Last updated: 1999-10-08

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directed set
<theory > A set X is directed under some relation , <= (less
than or equal), if it is non-empty and if for any two elements
x and y there exists an element z such that x <= z and y <= z.
I.e. all pairs have an upper bound .

Last updated: 1994-11-11

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directed acyclic graph « directed graph « Directed Oc « directed set » Direct Inward Dialing » directional coupler » Directly Executable Test Oriented Language

Copyright Denis Howe 1985