Properties of the spectral radius in Banach algebras
A Banach space has the reciprocal Dunford-Pettis property () if every completely continuous operator from to any Banach space is weakly compact. A Banach space has the (resp. property ) if every -subset of is relatively weakly compact (resp. weakly precompact). We prove that the projective tensor product has property when has the , has property , and .
The main objective of this paper is to give a simple proof for a larger class of spaces of the following theorem of Kalton and Werner. (a) X has property (M*), and (b) X has the metric compact approximation property Our main tool is a new property (wM*) which we show to be closely related to the unconditional metric approximation property.