TY - JOUR AB - We discuss the relative K-theory for a C*-algebra A, together with a C*-subalgebra A′ ⊆ A. The relative group is denoted Ki(A′;A), i = 0, 1, and is due to Karoubi. We present a situation where two pairs A′ ⊆ A and B′ ⊆ B are related so that there is a natural isomorphism between their respective relative K-theories. We also discuss applications to the case where A and B are C*-algebras of a pair of locally compact, Hausdorff topological groupoids, with Haar systems. AU - Putnam, Ian Fraser DA - 2021 DO - 10.17879/06089647453 LA - eng IS - Münster Journal of Mathematics M2 - 349 PY - 2021 SP - 349-402 T2 - Münster Journal of Mathematics TI - An excision theorem for the K-theory of C*-algebras, with applications to groupoid C*-algebras UR - https://nbn-resolving.org/urn:nbn:de:hbz:6-06089647852 Y2 - 2024-12-26T19:20:53 ER -