Announcements

• Oliver OH today 11:30-12:30 in 432.
• Due to the winter closure on Monday 2/23, class does not take place on campus. Here is a 1 minute video about the characteristic functions. The Characteristic function [PDF] is a complex analog of the moment generating function M_X(t) = E[exp(t X)] Just add an i to get φ_X(t) = E[exp(i t X)]. It is more powerful because it is defined for all random variables, unlike the moment generating function!
• About the Lebesgue integral.
• Oscar has OH Monday and Wednesday 7:30-9:30 at Math Dhall. Faris is on Thursdays 6-8 PM in Inn (1201 Mass av private dining room).
• OH Oliver Tuesday 11:30-12:30 PM and Friday 11 AM-12:30 PM
• Vitali Set construcftion (1 minute)