We establish a polynomial version of a theorem obtained by Enflo, Gurarii, Lomonosov and Lyubich for linear operators. As a consequence, we also derive a polynomial version of a result due to Pták.

This is a preview. Log in through your library . Abstract Abstract Tchakaloff’s theorem gives a quadrature formula for polynomials of a given degree with respect to a compactly supported positive ...

Before being mortally wounded in a duel at age 20, Évariste Galois discovered the hidden structure of polynomial equations. By studying the relationships between their solutions — rather than the ...