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27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
Math::Sequence defines a class for simple mathematic sequences with a
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recursive definition such as x_(n+1) = 1 / (x_n + 1). Creation of a
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Math::Sequence object is described below in the paragraph about the
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constructor.
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Math::Sequence uses Math::Symbolic to parse and modify the recursive
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sequence definitions. That means you specify the sequence as a string
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which is parsed by Math::Symbolic. Alternatively, you can pass the
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constructor a Math::Symbolic tree directly.
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Because Math::Sequence uses Math::Symbolic for its implementation, all
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results will be Math::Symbolic objects which may contain other variables
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than the sequence variable itself.
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Each Math::Sequence object is an iterator to iterate over the elements of
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the sequence starting at the first element (which was specified by the
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starting element, the second argument to the new() constructor). It offers
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facilities to cache all calculated elements and access any element
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directly, though unless the element has been cached in a previous
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calculation, this is just a shortcut for repeated use of the iterator.
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Every element in the sequence may only access its predecessor, not the
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elements before that.
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WWW: http://search.cpan.org/dist/Math-Sequence
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Author: Steffen Mueller <sequence-module@steffen-mueller.net>
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