Is a multivariate polynomial constant or zero?

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Description

Is a multivariate polynomial constant or zero?

Usage

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is.constant(a, allow.untrimmed = TRUE)
is.zero(a, allow.untrimmed = TRUE)

Arguments

a

A multipol

allow.untrimmed

Boolean with default TRUE meaning to allow a multipol to be zero/constant even if one or more array extents exceed 2

Author(s)

Robin K. S. Hankin

See Also

constant

Examples

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is.zero(linear(c(1,1i))*linear(c(1,-1i)) - ones(2,2))  # factorize x^2+y^2