Hi all,

The 18th Theory Weekly Meeting will happen **this Friday** between **4:00 – 5:00 pm **at **203 Davis Hall(Theory Lab)**. The schedule will be as follows :

**4:00 – 4:50 pm **– A talk by me. The abstract of the talk is as follows –

Consider the problem where we have to design two lines for a railway network: one must be a passenger line (where the train stops at all stations) and the other an express one (where the trains stops only at popular stations). This should be done in such a way that one can travel between any pair of stations using a combination of these two lines.

Does this hint a broader problem? Does this remind you of something in NYC (if you have visited there)? Does this convey a beautiful structure? To know the answers, please stop by the talk!

**4:50 – 5:00 pm ** – Socializing with the Theory community.** **