Presentations

Lipschitz extensions of metric mappings

Presentation

Nonpositive curvature is not coarsely universal

Presentation   Theory & Alg seminar

Expanders and coarse non-universality of CAT(0) spaces

Presentation (50 minutes)

On gentle partitions of unity and Lipschitz extension of finite metrics

Lecture notes (40 minutes)

The Ribe Program

Lecture notes for the talk (3 hours).

Expanders with respect to Hadamard spaces and random graphs

Lecture notes  Presentation (50 min)

Lecture notes (2024 talk in Weizmann)

Ultrametric skeletons

  Short spiel  2-hours black board talk  presentation (2 hours)

Ultrametric subsets with large Hausdorff dimension

Presentation: video slides (slides revised after the talk)

Nonlinear spectral calculus and super-expanders 

 SODA '10 

Markov convexity and local rigidity of distorted metrics

Presentation: SoCG '08

Maximum gradient embedding and monotone clustering

lecture notes

Ramsey partitions and proximity data structures

Presentation (60 min)

Metric cotype

Presentation (90 min)

Multi-embedding of metric spaces

Presentation: 25 min.

Ramsey-type Theorems for Metric Spaces with Applications to Online Problems

Presentation: 60 min.

Better algorithms for unfair metrical task systems and applications 

Presentation: 60 min.

Some of the presentations contain deliberate inaccuracies in order  to simplify the exposition. Consult the corresponding papers for a definite treatment of the subject matter.