The ℓ¹-Bass conjecture for all discrete groups
What the paper claims, in its own words
Proves the ℓ1-Bass conjecture for every discrete group: Hattori–Stallings traces of idempotent matrices over are supported on finitely many finite-order conjugacy classes. The algebraic companion proves the integral Bass trace conjecture and Kaplansky's idempotent conjecture for torsion-free groups over every commutative unital characteristic-zero domain.
The plain-language explainer for this entry is still coming.
The original papers (2)
- The ℓ¹-Bass Conjecture for Discrete Groups (PDF, opens in a new tab) October 5, 2026
- The Bass trace conjecture and the characteristic-zero Kaplansky idempotent conjecture (PDF, opens in a new tab) September 24, 2026 Formal proof listed