Publications

(the preprints have only arxiv links, the published papers have both the journal link and arxiv link and the content of those may differ)

Preprints

Non-Abelian expansion of congruence KMS complexes, joint with Inga Valentiner-Branth, Arxiv link.

New cosystolic high-dimensional expanders from KMS groups, joint with Inga Valentiner-Branth, Arxiv link.

Banach fixed point property for Steinberg groups over commutative rings, Arxiv link.

Journal Publications

Property (T) for groups acting on affine buildings, Bulletin of the London Mathematical Society (to appear), Arxiv link.

Zuk’s criterion for Banach spaces and random groups, Forum of Mathematics, Sigma, Journal link, Arxiv link.

Banach property (T) for SL(n,Z) and its applications, Inventiones Mathematicae, Journal link, Arxiv link

Garland’s method with Banach coefficients, Analysis & PDE 16 (2023), no. 3, 861–890, Journal link, Arxiv link.

High dimensional expanders and coset geometries, joint with Tali Kaufman, European Journal of Combinatorics 111 (2023), Paper No. 103696, Journal Link, Arxiv link.

Curvature criterion for vanishing of group cohomology, joint with Zohar Grinbaum-Reizis, Groups, Geometry and Dynamics 16 (2022), no. 3, 843–862, Journal link, Arxiv link.

Local Spectral Expansion Approach to High Dimensional Expanders Part II: Mixing and Geometrical overlapping, Discrete and Computational Geometry, 64 (2020), no. 3, 1023–1066, Journal link, Arxiv link.

Non p-norm approximated Groups, joint with Alexander Lubotzky, Journal d’Analyse Mathematique, 141 (2020), no. 1, 305-321, Journal link, Arxiv link.

High order random walks: Beyond spectral gaps, joint with Tali Kaufman, Combinatorica, 40 (2020), no. 2, 245–281, Journal link, Arxiv link.

Local spectral expansion approach to high dimensional expanders part I: Descent of spectral gaps, Discrete and Computational Geometry, Volume 59, issue 2, 2018, 293-330. Journal link, Arxiv link.

Angle criteria for uniform convergence of averaged projections and cyclic or random products of projections, Israel Journal of Mathematics, Volume 223, issue 1, 2018, 343-362 . Journal link, Arxiv link

Vanishing of cohomology with coefficients in representations on Banach spaces of groups acting on Buildings, Commentarii Mathematici Helvetici, 92 (2017), no. 2, 389–428.  Journal link, Arxiv link.

Averaged projections, angles between groups and strengthening of Banach property (T), Mathematische Annalen, 367 (2017), no. 1-2, 623–666. Journal link, Arxiv link.

Property (T) for groups acting on simplicial complexes through taking an “average” of Laplacian eigenvalues, Groups, Geometry and Dynamics, Volume 9, Issue 4, 2015, pp. 1131–1152, Journal link, Arxiv link.

Vanishing of cohomology and property (T) for groups acting on weighted simplicial complexes,  Groups, Geometry and Dynamics, Volume 9, Issue 1, 2015, pp. 67–101, Journal link, Arxiv link.

Fixed point theorem for reflexive Banach spaces and uniformly convex non positively curved metric spaces, Mathematische Zeitschrift. (2014) 278: 649-661, Journal link, Arxiv link.

An intermediate quasi-isometric invariant between subexponential asymptotic dimension growth and Yu’s Property A, Internat. J. Algebra and Comput., (2014) 24 (6) : 909-922, Journal link, Arxiv link.

Property A and the existence of a Markov process with a trivial Poisson boundary, Bull. London Math. Soc. (2014) 46 (4): 836-846, Journal link, Arxiv link.

Conference Publications

Coboundary expansion of coset complexes, joint with Tali Kaufman and Shmuel Weinberger, Accepted to STOC 25′,  Arxiv link.

High dimensional expansion implies amplified local testability, joint with Tali Kaufman, Accepted to RANDOM 2022, Arxiv link .

Coboundary and Cosystolic expansion from Strong Symmetry, joint with Tali Kaufman, ICALP 2021 conference proceedings 84:1-84:16, ICALP2021, Arxiv link.

High order random walks: Beyond spectral gaps, joint with Tali Kaufman, Published in RANDOM (conference proceedings), RANDOM2018.

Contruction of new examples of high dimensional expanders, joint with Tali Kaufman, Published in STOC 2018 (conference proceedings), STOC2018.

Lecture Notes and Recordings

Lecture notes of a course I gave on “Expander graphs and group theory”.

Slides and the recording of a talk I gave on random walks on partite complexes at the Simons foundation – MPS.

Slides and the recording of a talk I gave on Garland’s method in the IAS.

Slides for a talk on Fixed point spectrum of Random groups (Prepared for “Interactions between expanders, groups and operator algebras workshop”)

Recording of a talk I gave on Construction of High dimensional expanders in Winter school on expansion in groups, combinatorics, and complexity

Recording of a talk I gave on Banach fixed point properties of universal lattices and Steinberg group in “Spectral gaps” workshop the the INI

Not intended for publication

High dimensional analogue of metric distortion for simplicial complexes, Arxiv link.

Two approaches towards property (T) for groups acting on simplicial complexes, Arxiv link.

Isoperimetric Inequalities and topological overlapping for quotients of Affine buildings, Arxiv link.