1. [pdf] Back-and-Forth Relations on Boolean Algebras.
    AMS meeting, Wesleyan
    10-08.
  2. [pdf] Algorithmic Randomness and Computability.
    Mathematics Graduate Group, University of Chicago.
    04-19-06.
  3. [pdf] A Characterization of the lown Degrees by Escape Functions
    ASL meeting, University of Florida.
    03-12-06.
  4. [pdf] η-Representation of Sets and Degrees
    Logic Seminar, University of Chicago.
    10-28-05.
  5. [pdf On Bounding Saturated Models
    AMS meeting, Northwestern University.
    10-26-04.