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math.NT2025
Representations of binary forms by quaternary quadratic forms
Wooyeon Kim, Andreas Wieser, Pengyu Yang
We prove a local-global principle for representations of binary by quaternary quadratic forms. One of the main ingredients is a recent measure rigidity result of Einsiedler and Lin…
math.NT2025
Effective equidistribution of semisimple adelic periods and representations of quadratic forms
Manfred Einsiedler, Elon Lindenstrauss, Amir Mohammadi +1
We prove an effective equidistribution theorem for semisimple closed orbits on compact adelic quotients. The obtained error depends polynomially on the minimal complexity of interm…