Dear friends and colleagues, on Monday 14 August 2017 Professor Xuan Duong (Macquarie University) is giving a talk in the PDE Seminar on "Some recent progress on estimates of singular integrals" An abstract is available at http://www.maths.usyd.edu.au/u/PDESeminar/abstracts17/duong.xhtml The talk is from 2 pm - 3 pm in Carslaw 829 (Access Grid Room) on the Camperdown Campus at the University of Sydney. Everybody is invited to attend the talk, take part in the discussion afterwards in Carslaw Common Room 727 on level 7, and to join us for lunch. Kind regards, Daniel D and Daniel H P.S: If you know suitable speakers or want to give a talk yourself, please let us know.