19 citations · 26 across the 6 of their papers we have counts for
9 papers
A finite dimensional algebra with infinite delooping level
Luke Kershaw, Jeremy Rickard
We give an example of a finite dimensional algebra with infinite delooping level, based on an example of a semi-Gorenstein-projective module due to Ringel and Zhang.
Pathological abelian groups: a friendly example
Jeremy Rickard
We show that the group of bounded sequences of elements of is an example of an abelian group with several well known, and not so well known, pathological prop…
A cocomplete but not complete abelian category
Jeremy Rickard
An example of a cocomplete abelian category that is not complete is constructed.
Unbounded derived categories and the finitistic dimension conjecture
Jeremy Rickard
We consider the question of whether the injective modules generate the unbounded derived category of a ring as a triangulated category with arbitrary coproducts. We give an example…
Blocks and support varieties
Jon F. Carlson, Jeremy Rickard
The theory of support varieties gives a rich supply of examples of thick subcategories of the stable module category of a finite group algebra. We study direct sum decompositions o…
Rigidity of tilting complexes and derived equivalence for self-injective algebras
Salah Al-Nofayee, Jeremy Rickard
We give a proof, based on the rigidity of tilting complexes, that the class of self-injective finite-dimensional algebras over an algebraically closed field is closed under derived…