Group Actions on Twisted Sums of Banach Spaces
Group Actions on Twisted Sums of Banach Spaces
Abstract We study bounded actions of groups and semigroups G on exact sequences of Banach spaces from the point of view of (generalized) quasilinear maps, characterize the actions on the twisted sum space by commutator estimates and introduce the associated notions of G -centralizer and G -equivariant map. We will …