8 citations · 41 across the 24 of their papers we have counts for
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math.RA2012★ 1 cited
The negative side of cohomology for Calabi-Yau categories
Petter Andreas Bergh, David A. Jorgensen, Steffen Oppermann
We study integer-graded cohomology rings defined over Calabi-Yau categories. We show that the cohomology in negative degree is a trivial extension of the cohomology ring in non-neg…
math.CT2012★ 6 cited
The Gorenstein defect category
Petter Andreas Bergh, David A. Jorgensen, Steffen Oppermann
We consider the homotopy category of complexes of projective modules over a Noetherian ring. Truncation at degree zero induces a fully faithful triangle functor from the totally ac…