Concave set

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In mathematics, the notion of concave set is complementary to that of the convex set.

The following definitions are in use.

• A set is called concave if it is not convex.
• A set is called concave if its complement is convex.^[1]

[edit] See also

• Concave function

[edit] References

1. ^ Ragnar Frisch (1961) "A Survey of Types of Economic Forecasting and Programming", Institute of Economics, University of Oslo, p.40.