content of a recurrence operator - Maple Help

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LREtools[REcontent] - content of a recurrence operator

LREtools[REprimpart] - primpart of a recurrence operator

Calling Sequence

REcontent(problem)

REprimpart(problem)

Parameters

problem

-

problem

Description

• 

REcontent returns the content of the shift operator (that is, INFO[shifteqn]), thus returning the greatest common divisor of the coefficients of the operator.

• 

Similarly, REprimpart returns INFO[shifteqn]/REcontent(problem). Note:  Whereas the sign is removed from the content, it is not removed from the primitive part.

Examples

withLREtools:

REcontentn+1un+2+n+1un,un,

n+1

(1)

REprimpartn+1un+2+n+1un,un,

&Shiftnu2+1

(2)

REcontentn+1un+2+n+2un,un,

1

(3)

REprimpartn+1un+2+n+2un,un,

&Shiftnu2n+&Shiftnu2+n+2

(4)

See Also

content, LREtools, LREtools[REcreate], RESol


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