sequence
sequence in mathematics, ordered set of mathematical quantities called terms. A sequence is said to be known if a formula can be given for any particular term using the preceding terms or using its position in the sequence. For example, the sequence 1, 1, 2, 3, 5, 8, 13, … (the Fibonacci sequence) is formed by adding any two consecutive terms to obtain the next term. The sequence - 1/2 , 1, 7/2 , 7, 23/2 , 17, … is formed according to the formula ( n2 - 2)/2 for the n th, or general, term. A sequence may be either finite, e.g., 1, 2, 3, … 50, a sequence of 50 terms, or infinite, e.g., 1, 2, 3, … , which has no final term and thus continues indefinitely. Special types of sequences are commonly called progressions . The terms of a sequence, when written as an indicated sum, form a series ; e.g., the sum of the sequence 1, 2, 3, … 50 is the series 1 + 2 + 3 + … + 50.
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sequencer
The Concise Oxford Dictionary of Music
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1996
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| © The Concise Oxford Dictionary of Music 1996, originally published by Oxford University Press 1996. (Hide copyright information)
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sequencer. Elec. device enabling a succession of several sounds (together with modifications in each) to be pre-set.
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Sequence
The Concise Oxford Dictionary of World Religions
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1997
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| © The Concise Oxford Dictionary of World Religions 1997, originally published by Oxford University Press 1997. (Hide copyright information)
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Sequence. A hymn, usually in couplets, sung in the mass on certain days after the epistle. In medieval times a large number of sequences ( c.150 melodies and 400 texts, with at least 5,000 having been written) were in regular use, but in the missal only five are now printed.
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