Yesterday I gave a talk in the joint Mathematics and Computer Science seminar, at CI. Here are the slides.
[slideshare id=44312520&doc=58u6pekjqw64cjzdvrsk-signature-f0ae8e5a00d770c2e0072edb9ec77b21ee46e0a5ae498d1f34e55c834fdcea47-poli-150205095411-conversion-gate01]