derivation

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derivation,

in grammar: see inflectioninflection,
in grammar. In many languages, words or parts of words are arranged in formally similar sets consisting of a root, or base, and various affixes. Thus walking, walks, walker have in common the root walk and the affixes -ing, -s, and -er.
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derivation

[‚der·ə′vā·shən]
(mathematics)
The process of deducing a formula.
A function D on an algebra which satisfies the equation D (uv) = uD (v) + vD (u).

derivation

a. the process of deducing a mathematical theorem, formula, etc., as a necessary consequence of a set of accepted statements
b. this sequence of statements
c. the operation of finding a derivative
References in periodicals archive ?
Under the two-bucket approach, all production gross receipts from all sources are added together, all production expenses from all sources are added together, and the two resulting sums are netted to derive the taxpayer's QPAI.
Communications income is income derived from communications activity and may be derived indirectly, but in all cases the taxpayer derives communications income only if it is paid to transmit and bears the risk of transmitting, the communications.
While the Connecticut compost derives from a mixture of three parts household waste to one part filler, New York's comprises two parts leaves and two parts chipped Christmas trees to one part municipal waste.