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Relative approximations and Maschke functors

Published online by Cambridge University Press:  17 April 2009

Bin Zhu
Bin Zhu
Affiliation:
Department of Mathematical Sciences, Tsinghua University, 100084 Beijing, China e-mail: [email protected]
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Abstract

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The notion of approximations relative to a functor is introduced and several characterisations of relative (dual) Maschke functors are given by using them. As an application, the injective objects in the category of comodules over a coring are described.

Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 67 , Issue 2 , April 2003 , pp. 219 - 224
Copyright
Copyright © Australian Mathematical Society 2003

References

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