```julia julia> using DynamicPolynomials julia> @polyvar x (x,) julia> y = x * [x, x] (PolyVar{true}[x, x])x julia> typeof(y) Term{true,Array{PolyVar{true},1}} ``` This calls https://github.com/JuliaAlgebra/MultivariatePolynomials.jl/blob/518eda684f81254234ddf558728af5ab18582a99/src/operators.jl#L27.