**Tahl Nowik**

**Update 3 (January 30): **The midrasha ended today.** Update 2 (January 28): **additional videos are linked**; Update 1 (January 23):** Today we end the first week of the school. David Streurer and Peter Keevash completed their series of lectures and Alex Postnikov started his series.

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Today is the third day of our winter school. In this page I will gradually give links to to various lectures and background materials. I am going to update the page through the two weeks of the Midrasha. Here is the web page of the midrasha, and here is the program. **I will also present the posters for those who want me to: simply take a picture (or more than one) of the poster and send me. And also – links to additional materials, pictures, or anything else: just email me, or add a comment to this post.**

## Lecture series and lectures

### Irit Dinur: Direct products of games and graphs

### Peter Keevash: The Existence of Designs

Video 1, Video 2, Video3 Video4 Peter gave, in addition a colloquium talk (that was not videotaped) about a paper by Peter Keevash, Fiachra Knox, and Richard Mycroft an efficient algorithm for matching in certain hypergraphs. Related post

### David Streurer: Sum of Squares Method

Video 1, Video 2, Video3, Video4

### Nati Linial: High Dimensional Combinatorics: A Combinatorial Perspective of Simplicial Complexes

### Alexandru Nica: Combinatorial Aspects of Free Probability Theory

Video 1, Video 2, Video3, Video4

### Ehud Friedgut: Analysis of Boolean Functions on Graph Products, Dictatorships and Juntas

Video 1 (before lunch); Video 2 (after lunch)

### Ron Peled: Probabilistic Existence of Regular Combinatorial Structures

### Alexander Postnikov: The Combinatorics of the Grassmanian

Video1, Video2, Video3, Video4

### Tali Kaufman: High Dimensional Expanders: What, Why and How

(not recorded)

### Joel Hass and Tahl Nowik: **Combiknotorics**

Video 1 (Joel), video 2 (Joel), video 3 (Tahl), Video 4 (Joel)

### Wojiech Samotij: **Toward the hypergraph “container” theorem** (4 lectures)

Video 1, video 2 video 3 video 4

### Tamar Ziegler **Narrow Progressions in Primes**

### Open problems session

### Chaim Even-Zohar: **Invariants of Random Knots and Links**

### Ben-Zion Shilo: **Life’s Blueprint: The Science and Art of Embryo** **Creation **

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## Posters:

## Poster_philip_jerusalem_2015

Pingback: Séminaire N. Bourbaki – Designs Exist (after Peter Keevash) – the paper | Combinatorics and more