Gives a simple description of the free abelian category to clarify Auslander-Gruson-Jensen duality between definable subcategories of right and left modules over a ring.
When are definable classes tilting and cotilting classes?
1 Pith paper cite this work. Polarity classification is still indexing.
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Revising Auslander-Gruson-Jensen duality
Gives a simple description of the free abelian category to clarify Auslander-Gruson-Jensen duality between definable subcategories of right and left modules over a ring.