Dear friends and colleagues, on Monday, 6 August 2018, Dr Valentina Mira Wheeler (University of Wollongong) is giving a talk in the PDE Seminar on "Rigidity and stability of spheres in the Helfrich model" An abstract is available at http://www.maths.usyd.edu.au/u/PDESeminar/abstracts18/vwheeler.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 at 12:30 pm. 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.