@article{ZhengRettingerBarmpalias, author = {Zheng, Xizhong and Rettinger, Robert and Barmpalias, George}, title = {h-Monotonically computable real numbers}, series = {Mathematical Logic Quarterly}, volume = {51}, journal = {Mathematical Logic Quarterly}, number = {2}, issn = {0942-5616}, pages = {157 -- 170}, language = {en} } @article{RettingerZhengGengleretal., author = {Rettinger, Robert and Zheng, Xizhong and Gengler, Romain and Braunm{\"u}hl, Burchard von}, title = {Monotonically computable real numbers}, language = {en} } @article{Zheng, author = {Zheng, Xizhong}, title = {Closure properties on real numbers under limits and computable operators}, language = {en} } @phdthesis{Zheng, author = {Zheng, Xizhong}, title = {Effective Hierarchy of Real Numbers}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8322-6343-0}, pages = {X, 244}, language = {en} } @techreport{ZhengRettingerBraunmuehl, author = {Zheng, Xizhong and Rettinger, Robert and Braunm{\"u}hl, Burchard von}, title = {On the Jordan decomposability for computable functions of bounded variation}, publisher = {BTU, Inst. of Computer Science}, address = {Cottbus}, pages = {12}, language = {en} }