4 papers
Von Neumann-Jordan Constants in Banach Tensor Products
Wenwen Zhang, Ying Xu, Qi Liu +1
We investigate the von Neumann--Jordan constant of Banach tensor products equipped with the injective and projective tensor norms. We first establish lower estimates in terms of th…
Further Results on the Isometric Embeddability of \(S_q^m\) into \(S_p^n\)
Ying Xu, Wenwen Zhang, Qi Liu
We study Schatten embeddings through circular means of trace powers. In finite dimensions, a decomposition by singular-value vanishing orders shows that every term of order at most…
A Birkhoff-Orthogonal Dehghan--Rooin Type Constant in Banach Spaces
Jia Du, Tingting Hu, Wenwen Zhang +1
For a real Banach space . The Dehghan--Rooin magnitude compares the angular distance together with the skew angular distance $β[x,y]=\|x/\|y\|-y/\|x…
Skew-Parameterized Geometric Constants in Banach Spaces
Qing Du, Wenwen Zhang, Zhiyao Fang +1
Building on the family of geometric constants introduced by Amini-Harandi and Rahimi, we define a skew-parameterized family on real normed spaces by replacing the classical symmetr…