A. Wieser

collaborators

2 papers

math.NT2026

Planes in quadratic 4-space and associated shapes of lattices

Menny Aka, Konstantin Andritsch, Andreas Wieser

Let $Q = - x_{1}^{2} - x_{2}^{2} - x_{3}^{2} + x_{4}^{2}$ be the standard signature $(1, 3)$ quadratic form. To each non-degenerate rational plane $L$ in the four-dimensional quadratic space $(\mathbb{Q}^4,…

math.NT2026

Representations of binary quadratic forms by quaternary quadratic forms

Wooyeon Kim, Andreas Wieser, Pengyu Yang

We prove a local-global principle for primitive representations of binary quadratic forms by quaternary quadratic forms. Our method is a variant of Linnik's ergodic method showing…