3 Commits

Author	SHA1	Message	Date
Jidong Xiao	da223542ff	fixing subscripting issue	2023-10-12 07:44:33 -04:00
Jidong Xiao	1577849d90	fix the sigma display	2023-10-12 07:40:51 -04:00
Jidong Xiao	93be38e5e9	adding lecture 13	2023-10-12 07:29:14 -04:00