2 papers
math.CA2026
Proof of the Holevo--Utkin conjecture on sharp norms for zero-sum vectors
Haonan Zhang
Let and . Let denote the (quasi-)norm of a -dimensional vector . Holevo and Utkin \cite{HU26} conjectured that for , \[ \min \left\…
math.FA2018
From Wigner-Yanase-Dyson conjecture to Carlen-Frank-Lieb conjecture (New title)
Haonan Zhang
In this paper we study the joint convexity/concavity of the trace functions \[ Ψ_{p,q,s}(A,B)=\text{Tr}(B^{\frac{q}{2}}K^*A^{p}KB^{\frac{q}{2}})^s,~~p,q,s\in \mathbb{R}, \] where $…