Lecture 1:  Jan 6, 2020
            Jan 6, 2020
Lecture 2:  Jan 8, 2020
Lecture 3:  Jan 13, 2020
            Jan 13, 2020
Lecture 4:  Jan 15, 2020
Lecture 5:  Jan 22, 2020
Lecture 6:  Jan 27, 2020
Lecture 7:  Jan 29, 2020
Lecture 8:  Feb 3, 2020
Lecture 9:  Jan 5, 2020
Lecture 10:  Feb 10, 2020
Lecture 11:  Feb 12, 2020
Lecture 12:  Feb 17, 2020
Lecture 13:  Feb 19, 2020
Lecture 14:  Feb 24, 2020
Lecture 15:  Feb 26, 2020
Lecture 16:  Mar 2, 2020
Lecture 17:  Mar 4, 2020
Lecture 18:  Mar 9, 2020
Lecture 19:  Mar 11, 2020
Lecture 20:  Mar 23, 2020