It is possible to write endlessly on elliptic curves. (This is not a
threat.) We deal here with diophantine problems, and we lay the
foundations, especially for the theory of integral points. We review
briefly the analytic theory of the Weierstrass function, and then deal
with the arithmetic aspects of the addition formula, over complete
fields and over number fields, giving rise to the theory of the height
and its quadraticity. We apply this to integral points, covering the
inequalities of diophantine approximation both on the multiplicative
group and on the elliptic curve directly. Thus the book splits naturally
in two parts. The first part deals with the ordinary arithmetic of the
elliptic curve: The transcendental parametrization, the p-adic
parametrization, points of finite order and the group of rational
points, and the reduction of certain diophantine problems by the theory
of heights to diophantine inequalities involving logarithms. The second
part deals with the proofs of selected inequalities, at least strong
enough to obtain the finiteness of integral points.