Sur les modules des zéros des polynômes
Nous donnons les démonstrations détaillées des résultats énoncés dans une note de même titre (C. R. Acad. Sci., Paris, Ser. I 303 (1986), 539–542).Ces résultats concernent le nombre et la position des zéros réels des polynômes de Bernoulli.
Let be the Mahler measure of an algebraic number , and be an open subset of . Then its Lehmer constant is inf , the infimum being over all non-zero non-cyclotomic lying with its conjugates outside . We evaluate when is any annulus centered at . We do the same for a variant of , which we call the transfinite Lehmer constant .Also, we prove the converse to Langevin’s Theorem, which states that if contains a point of modulus . We prove the corresponding result for .
We prove that the study of the Łojasiewicz exponent at infinity of overdetermined polynomial mappings , m > n, can be reduced to the one when m = n.