Partially answering a question of A. Ya. Helemskii, we show that a von Neumann algebra is injective if and only if all its normal dual Banach left modules are 1-injective in the sense of the homology ...
The Romanian Mathematical Society (R.M.S.) is one of the oldest scientific societies in Romania and one of the largest among similar organisations in Europe. At present, R.M.S. has 51 subsidiaries ...
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