Abstract :
LetKbe an algebraic number field such that all the embeddings ofKinto image are real. We denote byOKthe ring of algebraic integers ofK. LetF(X, Y) be an irreducible polynomial inK[X, Y]−K[Y] of total degreeNand of degreen>0 inY. We denote byFN(X, Y) its leading homogeneous part. Suppose thatFN(1, Y) is a polynomial of degreenhaving no real roots. In this paper we establish a polynomial upper bound for the size of solutions (x, y)set membership, variantOK×Kof the equationF(X, Y)=0.