2 papers
math.AG2012
Experiments with the transcendental Brauer-Manin obstruction
Andreas-Stephan Elsenhans, Jörg Jahnel
We report on our experiments and theoretical investigations concerning weak approximation and the transcendental Brauer-Manin obstruction for special Kummer surfaces.
math.NT2010
The Diophantine Equation ---a number of improvements
Andreas-Stephan Elsenhans, Jörg Jahnel
The quadruple already known is essentially the only non-trivial solution of the Diophantine equation $x^4 + 2 y^4 = z^4 + 4 w…