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Is property differ for left(right) R left(right) S category of modules and for left R right S category of modules? What impact on Morita equivalence...

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    $\begingroup$ I'm having trouble understanding what you mean? If you spell out what the 'left R left S category of modules' is, then people will have a better chance at being able to answer this question. $\endgroup$
    – David Roberts
    Apr 19, 2012 at 6:39
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    $\begingroup$ In particular, do you know that a left $R$-module is a right $R^{op}$-module? $\endgroup$
    – David Roberts
    Apr 19, 2012 at 6:40

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