%0 Journal Article %A Zamani, Ali %A Moslehian, Mohammad Sal %T Exact and Approximate Operator Parallelism %J Canadian mathematical bulletin %D 2015 %P 207-224 %V 58 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2014-029-4/ %R 10.4153/CMB-2014-029-4 %F 10_4153_CMB_2014_029_4