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[theory-seminar] Theory Lunch 03/18: Margalit Glasgow

David Wajc wajc at stanford.edu
Thu Mar 18 09:00:17 PDT 2021


Reminder: (the socializing part of) theory lunch will start in three hours.

Cheers,
David

On Mon, 15 Mar 2021 at 09:22, David Wajc <wajc at stanford.edu> wrote:

> Hi all,
>
> This week's theory lunch will take place Thursday at noon (PDT), at our
> gather space:
> https://gather.town/app/lR6jRBPK44nZ7V68/StanfordTheory (*password:*
>  SongComplexity).
> Margalit will tell us about*:* *Invertibility of 3-core of Erdos-Reyni
> Graphs*
>
> *Abstract**: *
> In this talk, I'll show that in ER graphs with average degree d =
> omega(1), with probability 1 - o(1), the adjacency matrix of the 3-core of
> the graph has full rank. The key idea is a tight characterization of the
> combinatorial structures that cause linear dependencies in sparse random
> matrices. This proves a weakened version of a conjecture from Vu, 2014,
> which speculates that with high probability, the 3-core of a ER random
> graph is invertible for any average degree d > 1.
>
> Cheers,
> David
>
> PS
> *Pro tip:* To join the talk (at 12:30):
> (1) go to the lecture hall,
> (2) grab a seat, and
> (3)* press X to join the zoom lecture*
>
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