# Derivation (mathematics)/Definition

< Derivation (mathematics)

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Revision as of 16:44, 20 December 2008 by imported>Richard Pinch (A map defined on a ring which behaves formally like differentiation: D(x.y)=D(x).y+x.D(y).)

A map defined on a ring which behaves formally like differentiation: D(x.y)=D(x).y+x.D(y).