Yong Hu

activity

20242026

collaborators

3 papers

math.RA2026

Cohomological invariants of hermitian forms that detect hyperbolicity

Yong Hu, Alexandre Lourdeaux

By using unramified cohomology groups, we construct a full sequence of cohomological invariants for hermitian forms of any (orthogonal, symplectic or unitary) type that can be used…

math.NT2025

Pythagoras number of quartic orders containing $2$

Zilong He, Yong Hu

Let $K$ be a quartic number field containing $2$ and let $O \subseteq K$ be an order such that $2 \in O$ . We prove that the Pythagoras number of $\m…

math.NT2024

Multivariable ( $I ¨ $ , $O_{K}^{\times}$ )-modules and local-global compatibility

Christophe Breuil, Florian Herzig, Yongquan Hu +2

Let $p$ be a prime number, $K$ a finite unramified extension of $Q_{p}$ and $F$ a finite extension of $F_{p}$ . Using perfectoid spaces we associate to any fi…

Cohomological invariants of hermitian forms that detect hyperbolicity

Pythagoras number of quartic orders containing 2​

Multivariable (I¨,OK×​)-modules and local-global compatibility

Pythagoras number of quartic orders containing $2$

Multivariable ( $I ¨ $ , $O_{K}^{\times}$ )-modules and local-global compatibility