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Corings with Decomposition and Semiperfect Corings

✍ Scribed by L. El Kaoutit; J. Gómez-Torrecillas

Book ID
106341810
Publisher
Springer Netherlands
Year
2009
Tongue
English
Weight
462 KB
Volume
12
Category
Article
ISSN
1386-923X

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## Abstract We show that the bicategory whose 0‐cells are corings over rings with local units is bi‐equivalent to the bicategory of comonads in (right) unital modules whose underlying functors are right exact and preserve direct sums. A base ring extension of a coring by an adjunction is introduced