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math.FA2019★ 1 cited
c-numerical range of operator products on B(H)
Yanfang Zhang, Xiaochun Fang
Let H be a complex Hilbert space of dimension no less than 2 and B(H) be the algebra of all bounded linear operators on H. We give the form of surjective maps on B(H) preserving c-…
math.FA2015★ 4 cited
Narrow Orthogonally Additive Operators on Lattice-Normed Spaces
Xiao Chun Fang, Marat Pliev
The aim of this article is to extend results of M.~Popov and second named author about orthogonally additive narrow operators on vector lattices. The main object of our investigati…