digraph


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digraph

[′dī‚graf]
(mathematics)
directed graph

Digraph

 

a combination of two or more letters that indicate a single sound, for example, Polish sz and cz. In Russian known as ligatura, see LIGATURE.

digraph

In some programming languages, a digraph is two common keyboard characters used together that represent one symbol. For example, (* and *) have represented the curly braces { and }. A trigraph uses three characters such as ??- for a tilde ~. Digraphs and trigraphs are methods for ensuring symbols can be entered into source code from an abbreviated keyboard that has fewer keys than a full-size unit.
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in [2], Choi constructs a bijection between the set of Davis-Januszkiewicz equivalence classes of small covers over an n-cube and the set of acyclic digraphs with n-labeled nodes.
The number of orientable small covers over a product of simplices
Example 7 Consider the SVN digraph [mathematical expression not reproducible] in Figure 1 with vertex set [mathematical expression not reproducible] and arc set [mathematical expression not reproducible] with one loop at each vertex as follows:
On Single Valued Neutrosophic Signed Digraph and its Applications
In this SP we can easily identify an erasure of overlap, indicating the competition between the grapheme 'c' and the grapheme 's' for the orthographic representation of the digraph 'ss'.
EARLY RECOGNITION OF SPELLING PROBLEMS IN STORIES INVENTED BY TWO NEWLY LITERATE PUPILS: WHEN AND HOW THEY HAPPEN/Reconhecimento antecipado de problemas Ortograficos em escreventes novatos: quando e como acontecem
Let digraph (G, A) be strongly connected, in which A = [([[delta].sub.kh]).sub.lxl].
Graph-Theoretic Approach to Exponential Stability of Delayed Coupled Systems on Networks under Periodically Intermittent Control
(ii) The digraph G = (V, E) is said to be transitive if whenever (x, y) [member of] E and (y, z) [member of] E, (x, z) [member of] E.
Extension of Kirk-Saliga Fixed Point Theorem in a Metric Space with a Reflexive Digraph
Jia, "Interval bipartite consensus of networked agents associated with signed digraphs," Institute of Electrical and Electronics Engineers Transactions on Automatic Control, vol.
Event-Triggered Bipartite Consensus of Single-Integrator Multi-Agent Systems with Measurement Noise
where each [G.sub.i] is a digraph. We need this fact and the following lemmas.
The Structure of Isomorphic Digraph from Powers Modulo [p.sup.e]
In Section 4, the existence of a common N-tupled fixed point of operators satisfying ([phi], [psi])-contractive conditions in metric spaces endowed with a digraph is considered.
Some Results on N-Tupled Coincidence and Fixed Points of Graphs on Metric Spaces and an Application to Integral Equations
By induction, there exists digraph isomorphism [[phi].sub.i] : T([a.sub.i]) [right arrow] T([b.sub.i]).
Dynamics of Endomorphism of Finite Abelian Groups
The adjancency matrixA(D) of a digraph D is the p x p matrix [[a.sub.ij]] with [a.sub.ij] = 1 if [v.sub.i][v.sub.j] is an arc of D, and 0 otherwise (Fig.
Application of Graph Theory in Automation
Based on the two sets, we can construct strong/weak dominant digraph. The procedure by which we sequence the alternatives by using the two digraphs seems like that stated in Step 2 of the ELECTRE-II method.
A Decision Model for Emergency Warehouse Location Based on a Novel Stochastic MCDA Method: Evidence from China
If the digraph G has a spanning tree, then its Laplacian matrix L has a simple zero eigenvalue and all other eigenvalues have positive real parts.
Consensus of High-Order Nonlinear Multiagent Systems with Constrained Switching Topologies

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