changeParameters: Change of parameters in a 'symbolicQspray' polynomial

In symbolicQspray: Multivariate Polynomials with Symbolic Parameters in their Coefficients

Change of parameters in a 'symbolicQspray' polynomial

Description

Replaces the parameters of a symbolicQspray polynomial (which are qspray objects) with some qspray polynomials. E.g. you have a polynomial with two parameters P_{a,b}(x) and you want the polynomial P_{a+1,b+1}(x) (see example).

Usage

changeParameters(Qspray, newParameters)

Arguments

Qspray	a symbolicQspray polynomial
newParameters	a list containing at least n qspray objects, or objects coercible to qspray objects, where n is the number of parameters in the symbolic polynomial given in the Qspray argument; if this list is named, then its names will be used in the show options of the result

Value

The symbolicQspray polynomial obtained by replacing the parameters of the symbolic polynomial given in the Qspray argument with the polynomials given in the newParameters argument.

See Also

If you want to change the variables of a symbolic qspray, use changeVariables. If you want to assign some values to its parameters, use substituteParameters.

Examples

library(symbolicQspray)
( JP <- JacobiPolynomial(2) ) # a univariate polynomial with two parameters
a1 <- qlone(1)
a2 <- qlone(2)
changeParameters(JP, list(a1, a2)) == JP # should be TRUE
changeParameters(JP, list(a1+1, a2+1))

symbolicQspray documentation built on Sept. 11, 2024, 5:15 p.m.