Function Composition - Composition Operator

Given a function g, the composition operator is defined as that operator which maps functions to functions as

Composition operators are studied in the field of operator theory.

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Famous quotes containing the word composition:

    Every thing in his composition was little; and he had all the weaknesses of a little mind, without any of the virtues, or even the vices, of a great one.
    Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)