Necessity And Sufficiency
In logic, necessity and sufficiency refer to the implicational relationships between statements. The assertion that one statement is a necessary and sufficient condition of another means that the former statement is true if and only if the latter is true.
Other articles related to "necessity and sufficiency":
... For example, in graph theory a graph G is called bipartite if it is possible to assign to each of its vertices the color black or white in such a way that every edge of G has one endpoint of each color ... And for any graph to be bipartite, it is a necessary and sufficient condition that it contain no odd-length cycles ...
Famous quotes containing the words sufficiency and/or necessity:
“Our age is very cheap and intelligible. Unroof any house, and you shall find it. The well-being consists in having a sufficiency of coffee and toast, with a daily newspaper; a well glazed parlor, with marbles, mirrors and centre-table; and the excitement of a few parties and a few rides in a year.”
—Ralph Waldo Emerson (18031882)
“The sadness of the womens movement is that they dont allow the necessity of love. See, I dont personally trust any revolution where love is not allowed.”
—Maya Angelou (b. 1928)