Bin Cheng visited Hamburg Germany last week (Thursday-Friday 23-24 November). He was invited to give the Lothar-Collatz Colloquium in Applied Mathematics at the the Universität Hamburg. His talk was on “Near resonant approximation in Geophysical Fluid Dynamics“. A link to the announcement with abstract is available (link here). His host for the visit was Prof Dr Jens Rademacher. The photo below was taken by Bin and shows the River Elb. The screenshot below that shows the announcement for Bin‘s talk.