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gfun[`rec+rec`] - termwise sum of two holonomic recurrences
gfun[`rec*rec`] - termwise product of two holonomic recurrences
gfun[cauchyproduct] - Cauchy product of two holonomic recurrences
Calling Sequence
`rec+rec`(rec1, rec2, u(n))
`rec*rec`(rec1, rec2, u(n))
cauchyproduct(rec1, rec2, u(n))
Parameters
rec1, rec2
-
linear recurrences with polynomial coefficients
u
name; recurrence name
n
name; index of the recurrence u
Description
The gfun[`rec+rec`](rec1, rec2, u(n)) command returns a termwise sum of two holonomic recurrences, rec1 and rec2.
If and are the sequences defined by rec1 and rec2 respectively, the gfun[`rec+rec`] function returns a recurrence for .
The gfun[`rec*rec`](rec1, rec2, u(n)) command returns a termwise product of two holonomic recurrences, rec1 and rec2.
If and are the sequences defined by rec1 and rec2 respectively, the gfun[`rec*rec`] function returns a recurrence for .
The gfun[cauchyproduct](rec1, rec2, u(n)) command returns the Cauchy product of the two holonomic recurrences, rec1 and rec2.
If and are the sequences defined by rec1 and rec2 respectively, the gfun[cauchyproduct] function returns a recurrence for their Cauchy product or convolution .
Examples
See Also
gfun, gfun[`diffeq+diffeq`], gfun[`diffeq*diffeq`], gfun[hadamardproduct], gfun[parameters]
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