A no-preparation seminar

As already mentioned by Philip, this year we aim at organising the Theory Club every week. We are aware, however, that we may be short of speakers very soon due to general lack of time for preparation expressed by many people. To encourage prospective speakers, I decided to give a talk about a piece of my recent research, deliberately avoiding any serious preparation. I hope it will go well and motivate you to give more frequent talks. My talk will be about calculating the spectrum of some signal x(t), where time t does not flow uniformly but it performs a sort of Brownian motion.