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A function [tex]f : \mathbf{R}^n\rightarrow\mathbf{R}[/tex] is multilinear if it's linear in every variable. Is there a multilinear function that's not a multilinear polynomial?
Given a function defined on the n dimensional hypercube, values of which are 0 or 1, there is a unique multilinear extension to all of R. Is this extension a polynomial?
Given a function defined on the n dimensional hypercube, values of which are 0 or 1, there is a unique multilinear extension to all of R. Is this extension a polynomial?