Uc: Cryptics: "The Di- in Dim Sum", "Last, Minute", and "Four-Part Party"

http://math.uchicago.edu/~wald/bday_pe.pdf

http://math.uchicago.edu/~wald/lastminute.pdf

http://math.uchicago.edu/~wald/fourpartparty.pdf

(Written for a birthday brunch and two other parties.)