"Oh, take a seat. How about a cup of coffee?" Edward nodded, indicating he understood.
Professor Sarnak was a big name in the fields of number theory and mathematical analysis, often holding meetings in the adjacent mathematics department.
However, the fact that Peter Schultz was willing to attend this time probably meant more than just participating in a conference.
"Sure, that would be great. I could really use an ou lai coffee to perk me up."
"We only have American coffee."
"Hmm... that's fine."
Edward Witten stood up and, while helping Peter Schultz with the coffee, casually asked, "Did you see the two problems Qiao posted?"
"Yes, I got the email just after getting off the plane. The second problem is interesting, although it's just a minimization problem. I think if we use the variational method's Euler-Lagrange equation, we could obtain a movement equation, but..."
