51 citations · 264 across the 70 of their papers we have counts for
Showing 2006 · math.RAShow all
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math.RA2006★ 8 cited
Covers, preenvelopes, and purity
Henrik Holm, Peter Jorgensen
We show that if a class of modules is closed under pure quotients, then it is precovering if and only if it is covering, and this happens if and only if it is closed under direct s…
math.RA2006★ 2 cited
Amplitude inequalities for Differential Graded modules
Peter Jorgensen
Differential Graded Algebras can be studied through their Differential Graded modules. Among these, the compact ones attract particular attention. This paper proves that over a sui…