Restriction to finite-index subgroups as étale extensions in topology, KK–theory and geometry

TY - JOUR

T1 - Restriction to finite-index subgroups as étale extensions in topology, KK–theory and geometry

AU - Balmer, Paul

AU - Dell’Ambrogio, Ivo

AU - Sanders, Beren

PY - 2015/11/12

Y1 - 2015/11/12

N2 - For equivariant stable homotopy theory, equivariant KK–theory and equivariant derived categories, we show how restriction to a subgroup of finite index yields a finite commutative separable extension, analogous to finite étale extensions in algebraic geometry.

AB - For equivariant stable homotopy theory, equivariant KK–theory and equivariant derived categories, we show how restriction to a subgroup of finite index yields a finite commutative separable extension, analogous to finite étale extensions in algebraic geometry.

U2 - 10.2140/agt.2015.15.3025

DO - 10.2140/agt.2015.15.3025

M3 - Journal article

SN - 1472-2747

VL - 15

SP - 3025

EP - 3047

JO - Algebraic and Geometric Topology

JF - Algebraic and Geometric Topology

IS - 5

ER -