Roman Numeral: XI = 11 = Eleven.
XI is the Roman Numeral symbol for 11.
The Roman numeral of XI is equivalent to 11
"xi" symbol in maths if used mostly in ven diogrammes and is in the top, right hand corner
Congshen has written: 'Jian xi he jian xi'
Mingzhen. Xi has written: 'Hong yan'
Shan Luo has written: 'Ku qi di yu xi' 'Ku xi de you xi'
Xi-Qiang Yang has written: 'A study of chemiluminescence'
Xi Fan has written: 'Ni ceng lai guo'
Xiande Xi has written: 'Sun Zhongshan yu Meiguo ='
Xi Liu has written: 'Sheng ya' 'Da dao \\'
Men Ding Xi has written: 'Mo gong'
Hong Yin Xi has written: 'Jing ru Jianada'