In mathematics, the flatness (symbol: ⏥) of a surface is the degree to which it approximates a mathematical plane. The term is often generalized for higher-dimensional manifolds to describe the degree to which they approximate the Euclidean space of the same dimensionality. (See curvature.)[1]
Flatness in homological algebra and algebraic geometry means, of an object in an abelian category, that is an exact functor. See flat module or, for more generality, flat morphism.[2]
Preview | ⏥ | |
---|---|---|
Unicode name | FLATNESS | |
Encodings | decimal | hex |
Unicode | 9189 | U+23E5 |
UTF-8 | 226 143 165 | E2 8F A5 |
Numeric character reference | ⏥ |
⏥ |