Let $P=(x_1,y_1)$ be a non torsion point on an elliptic curve $y^2=x^3+Ax+B$. Let $(x_n,y_n)=P^{2^n}. x_n,y_n$ are rationals with heights growing rapidly. Can ${x_n} {y_n}$ staysstay bounded ?
RobPratt
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