k-semistratifiable spaces and expansions of set-valued mappings Peng-Fei Yan | Xing-Yu Hu | Li-Hong Xie | Show more Peng-Fei Yan China Wuyi University School of Mathematics and Computational Science Xing-Yu Hu China Wuyi University School of Mathematics and Computational Science Li-Hong Xie China Wuyi University School of Mathematics and Computational Science Submitted: 2017-07-17 | Accepted: 2018-02-05 | Published: 2018-04-02 DOI: https://doi.org/10.4995/agt.2018.7883