Dear colleagues, tomorrow on Tuesday, 29 October 2019, the Dalyell student Dibyendu Roy will give a "test talk" on "The Sturm-Liouville Oscillation and the fundamental gap". The talk should take only 10 minutes, and supposed to be a test talk for Friday’s presentation day of the Science Dalyell Individual Research Project. You are warmly invited to sit in the talk and ask questions afterwards. Best wishes, Daniel