Sperner Theorem and a Problem of Erdos-Katona-Kleitman
                    
                  
                  
                  
                  
                  
                    
 
 
   
   主 题: Sperner Theorem and a Problem of Erdos-Katona-Kleitman
报告人: Wenying Gan (UCLA)
时 间: 2013-06-21 15:30-16:30
地 点: 理科一号楼1493 
  
 A central result in extremal set theory is the celebrated theorem of Sperner from 1928, which gives the size of the largest family of subsets of [n] not containing a 2-chain F1