Mathematics – Rings and Algebras
Scientific paper
2003-01-29
Mathematics
Rings and Algebras
13 pages, LaTeX
Scientific paper
To any bimodule which is finitely generated and projective on one side one can associate a coring, known as a comatrix coring. A new description of comatrix corings in terms of data reminiscent of a Morita context is given. It is also studied how properties of bimodules are reflected in the associated comatrix corings. In particular it is shown that separable bimodules give rise to coseparable comatrix corings, while Frobenius bimodules induce Frobenius comatrix corings.
Brzezinski Tomasz
Gómez-Torrecillas José
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