Open Research Index

The ℓ¹-Bass Conjecture for Discrete Groups

OpenAI

OpenAI Mathopenai-math/The-l1-Bass-Conjecture-for-Discrete-GroupsOct 5, 2026math.RAAI-generatedscore 0

We prove the ℓ 1 -Bass conjecture for every discrete group. The Hattori–Stallings trace of every idempotent matrix over the complex ℓ 1 group algebra is supported on finitely many conjugacy classes of finite-order elements.

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