2 papers
math.OA2021
Surjective -isometries of Grassmann spaces
Wenhua Qian, Junhao Shen, Weijuan Shi +2
Based on the characterization of surjective -isometries of unitary groups in finite factors, we describe all surjective -isometries between Grassmann spaces of projection…
math.OA2018
Wigner-Type Theorem on transition probability preserving maps in semifinite factors
Wenhua Qian, Liguang Wang, Wenming Wu +1
The Wigner's theorem, which is one of the cornerstones of the mathematical formulation of quantum mechanics, asserts that every symmetry of quantum system is unitary or anti-unitar…