We investigate the higher-dimensional amenability of tensor products A ⊗̂ B of Banach algebras A and B. We prove that the weak bidimension dbw of the tensor product A⊗̂B of Banach algebras A and B with bounded approximate identities satisfies dbwA ⊗̂ B = dbwA+ dbwB. We show that it cannot be extended to arbitrary Banach algebras. For example, for a biflat Banach algebra A which has a left or right...

For a fixed pattern graph H , let H -CONTRACTIBILITY denote the problem of deciding whether a given input graph is contractible to H . This article is part II of our study on the computational complexity of the H -CONTRACTIBILITY problem. In the first article we pinpointed the complexity for all pattern graphswith five vertices except for two pattern graphs H . Here, we present polynomial time ...

We investigate how the contractibility of actions affecting the value of an asset affects asset ownership. We examine this by testing how on-board computer (OBC) adoption affects truck ownership. We develop and test the proposition that adoption should lead to less ownership by drivers, particularly for hauls where drivers have the greatest incentive to drive in non-optimal ways or engage in re...

The main aim of this paper is to prove that the maximal operator σ∗ of the Fejér means of the two dimensional character system of the p-series field in the Kaczmarz rearrangement is bounded from the Hardy space Hα to the space Lα for α > 1/2, provided that the supremum in the maximal operator is taken over a positive cone. We also prove that the maximal operator σ∗ 0 of Fejér means of the two d...

One of the main themes in current management control literature is study systems practices. While several studies have examined pairwise (‘dyadic’) complementarities practices to investigate whether a system exists, may also be comprised more than two (‘nondyadic systems’). We examine organizations use complementary three performance measurement uses mitigate problem effort direction. illustrat...