peng jiang jp021sjtueducn hi mail nothing r chinese feel responsible send mail 2008 beijing olympics beginning welcome beijing best regards peng jiang 江鹏 phd candidate antai college economics management 安泰经济管理学院 department mathematics 数学系 shanghai jiaotong university minhang campus 800 dongchuan road 200240 shanghai p r china ______________________________________________ rhelprprojectorg mailing list httpsstatethzchmailmanlistinforhelp please read posting guide httpwwwrprojectorgpostingguidehtml provide commented minimal selfcontained reproducible code fri 08 aug 2008 214556 0800 r non r subject