2 papers
math.GR2026
The Margulis Zimmer Conjecture for Nonuniform Arithmetic Groups
Yehuda Shalom, Tyakal Venkataramana, George Willis
We prove that every infinite subgroup of a higher rank irreducible lattice in a semi-simple Lie group has finite index in the lattice, proving the Margulis-Zimmer conjecture for th…
math.GR2025
Norm rigidity for arithmetic and profinite groups
Leonid Polterovich, Yehuda Shalom, Zvi Shem-Tov
Let be a commutative ring, and assume every non-trivial ideal of has finite-index. We show that if has bounded elementary generation then every conjugation…