On this page
Idempotent trace support and coefficient-regime audit
Family 207: The ℓ¹-Bass conjecture for all discrete groups. First application triage, 9 October 2026 Australia/Brisbane.
Problem and potential new use
Algebra formalization researchers can connect trace support conclusions with discrete groups and distinguish characteristic-zero algebraic companions.
Applicability and commercial boundary
The l1 analytic algebra differs from a finite group ring. Characteristic-zero idempotent conclusions should not be conflated with characteristic-two zero-divisor counterexamples.
Initial business decision
Research reference or conditional symbolic/verification engineering. No practical implementation, recurring buyer need or profitability has been demonstrated; a weak business bridge is explicitly deferred.
Next verification action
Build a coefficient/analytic-completion crosswalk and exact finite example.
Evidence scope
The catalog statement was individually reviewed. Main-paper proof, construction effectiveness and selected formal scope comparison remain queued. No independent Lean verification was run. Source revision fd4aeeb2ee4fc729c18d98444fed42fd0529eeeb. See source metadata.