<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">On 9 Feb, Elena and David will continue the talk begun on 26 Jan, regarding a concentration <div class="">inequality for time reversible Markov chains. This week they will get into some of the details</div><div class="">of the method for bounding the operator norm of the perturbed transition matrix. </div><div class=""><br class=""></div><div class="">The necessary complex analysis is summarized by segment 4 of the attached handout.</div><div class="">The handout also contains a very compressed account of the material presented on 26 Jan.</div><div class="">E&D hope the talk will still be accessible to anyone who missed the first talk.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">The handout is also available at <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.dropbox.com_s_ft8liivn3nc53q3_YPNG-5F9feb2018.pdf-3Fdl-3D0&d=DwMFAg&c=cjytLXgP8ixuoHflwc-poQ&r=TV2LzVSKPR1lWutSsC83GRg2E3XH9EJBNgdZw5Y_7HU&m=JZ_J73ZGRE9YS4mQrL-ej6No3c4RbPaU0cUzaKj8K-Y&s=C9qwSx3d7FNqIidWszflGsgrb3cH4DFMWvyqwdyBZpk&e=" class="">https://www.dropbox.com/s/ft8liivn3nc53q3/YPNG_9feb2018.pdf?dl=0</a></div><div class=""><br class=""></div><div class=""></div></body></html>