## $$S$$-integral solutions to a Weierstrass equation.(English)Zbl 0898.11009

The author determines the rational solutions (with a power of $$2$$ in the denominator) to the equation $y^2 = x^3 - 228 x + 848.$ This is an elliptic curve of rank two. There are a variety of standard techniques to solve this problem: For instance using a reduction to Thue-Mahler equations or using elliptic logarithms (and their $$p$$-adic generalizations). However, in this paper the author takes the novel approach of reduction to four term $$S$$-unit equations of a special form. The author attributes this idea to Y. Bilu.
The approach in the current paper has a number of advantages. One does not need unproved estimates for linear forms in $$p$$-adic elliptic logarithms, nor does one need to reduce to a set of Thue-Mahler equations, which can lead to huge computational problems. In addition, the paper contains a detailed explanation of the calculations performed to solve the equation.

### MSC:

 11D25 Cubic and quartic Diophantine equations 11G05 Elliptic curves over global fields 14G05 Rational points
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### References:

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