Differential (mathematics)

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In mathematics, the term differential has several meanings.

Basic notions[edit]

Differential geometry[edit]

The notion of a differential motivates several concepts in differential geometry (and differential topology).

Algebraic geometry[edit]

Differentials are also important in algebraic geometry, and there are several important notions.

Other meanings[edit]

The term differential has also been adopted in homological algebra and algebraic topology, because of the role the exterior derivative plays in de Rham cohomology: in a cochain complex (C_\bullet, d_\bullet), the maps (or coboundary operators) di are often called differentials. Dually, the boundary operators in a chain complex are sometimes called codifferentials.

The properties of the differential also motivate the algebraic notions of a derivation and a differential algebra.

External links[edit]