A composition series of an object A in an abelian category is a sequence of subobjects
such that each quotient object Xi /Xi + 1 is simple (for 0 ≤ i < n). If A has a composition series, the integer n only depends on A and is called the length of A.
Famous quotes containing the words composition and/or series:
“The proposed Constitution ... is, in strictness, neither a national nor a federal constitution; but a composition of both.”
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—Anita Brookner (b. 1928)
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