On the Order Hereditary Closure Preserving Sum Theorem Jianhua Gong | Ivan L. Reilly | Show more Jianhua Gong United Arab Emirates United Arab Emirates University Department of Mathematical Sciences Ivan L. Reilly New Zealand University of Auckland Department of Mathematics Submitted: 2013-11-15 | Accepted: 2013-11-15 | DOI: https://doi.org/10.4995/agt.2007.1892