isUnivariate {ratioOfQsprays}

Whether a 'ratioOfQsprays' is univariate

Description

Checks whether a ratioOfQsprays object defines a univariate fraction of polynomials.

Usage

## S4 method for signature 'ratioOfQsprays'
isUnivariate(x)

Arguments

x

a ratioOfQsprays object

Value

A Boolean value.

Note

The ratioOfQsprays object y / (1 + y) where y=qlone(2) is not univariate, although it involves only one variable. The function returns TRUE when only qlone(1) is involved or when no variable is involved.