Graph

A graph is

• In linguistics, a letter or symbol such as an alphabetic letter, a Chinese character, or a hieroglyph.
• In mathematics, the word graph can have three meanings:
  • In graph theory, a graph is an object consisting of vertices (or nodes) and edges (or arcs) between pairs of vertices.
  • The graph of a function f : X -> Y is the set of all pairs (x,f(x))
  • The graph of a relation, a generalisation of the graph of a function.

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