The kernel of the determinant map on certain simple C*-algebras
classification
🧮 math.OA
keywords
determinantkernelsimplealgebraalgebrascancellationcasecertain
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Let A be a unital separable simple C*-algebra such that either (1) A has real rank zero, strict comparison and cancellation or (2) A is TAI. We study the kernel of the de la Harpe--Skandalis determinant on GL^0(A), proving that the determinant vanishes exactly on elements which are products of 8 multiplicative commutators. We also have results for the unitary case.
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