作者简介:YANG Lu(1978-),male,native of Yibin,Sichuan,undergraduate in the Department of Mathematics of,Sichuna Normal University,engages in distance geometry and inequality theorm.
About author:YANG Lu(1978-),male,native of Yibin,Sichuan,undergraduate in the Department of Mathematics of,Sichuna Normal University,engages in distance geometry and inequality theorm.