@article{paperid:1053932, author = {Mohammad Ardeshir and Ramezanian, Rasoul}, title = {On the Constructive Notion of Closure Maps}, journal = {Mathematical Logic Quarterly}, year = {2012}, volume = {58}, number = {4}, month = {July}, issn = {0942-5616}, pages = {348--355}, numpages = {7}, keywords = {Constructive reverse mathematics; closure maps; fan theorem}, }