Talk to your parents or to another trusted adult about your health-related questions. Ask questions and insist on answers. Learn additional facts about how drug abuse puts your whole body at risk.
graph(Noun) An ordered pair , where is a set of elements called vertices (or nodes) and is a set of pairs of elements of , called edges; informally, a set of vertices together with a set edges that join these vertices.
Graph Theory: Definition and Properties. 1. Basic Graph Definition. A graph is a symbolic representation of a network and of its connectivity. It implies an abstraction of the reality so it can be simplified as a set of linked nodes. Graph theory is a branch of mathematics concerned about how networks can be encoded and their properties measured.