13 citations · 26 across the 10 of their papers we have counts for
13 papers
On a variant of Tingley's problem for some function spaces
Chi-Wai Leung, Chi-Keung Ng, Ngai-Ching Wong
Let and be two arbitrary measure spaces, and . Set $$L^p(μ)_+^\mathrm{sp}:= \{f\in L^p(μ): \|f\|_p =1; f\geq 0\ μ\tex…
Analytic bundle structure on the idempotent manifold
Chi-Wai Leung, Chi-Keung Ng
Let be a (real or complex) Banach space, and be the set of all (non-zero and non-identity) idempotents; i.e., bounded linear operators on whose squares equ…
The topology on Berkovich affine lines over complete valuation rings
Chi-Wai Leung, Chi-Keung Ng
In this article, we give a full description of the topology of the one dimensional affine analytic space over a complete valuation ring (i.e. a valuation ring…
The positive contractive part of a Noncommutative -space is a complete Jordan invariant
Chi-Wai Leung, Chi-Keung Ng, Ngai-Ching Wong
Let . We show that the positive part of the closed unit ball of a non-commmutative -space, as a metric space, is a complete Jordan -invariant for the…
Transition probabilities of normal states determine the Jordan structure of a quantum system
Chi-Wai Leung, Chi-Keung Ng, Ngai-Ching Wong
Let be a bijection (not assumed affine nor continuous) between the sets of normal states of two quantum systems, modelled on the self-adj…
Berkovich spectra of elements in Banach Rings
Chi-Wai Leung, Chi-Keung Ng
Adapting the notion of the spectrum for an element in an ultrametric Banach algebra (as defined by Berkovich), we introduce and briefly study the Berkovich spectrum $σ^{B…