Abstract
We give a classification of torsion classes (or nullity classes) in an abelian category by forming a spectrum of equivalence classes of premonoform objects. This is parallel to Kanda’s classification of Serre subcategories.
Acknowledgements
The authors thank Manuel Reyes, who gave us many interesting comments and helpful references. The authors also thank the referees for carefully reading the paper and for their useful suggestions.
Disclosure statement
No potential conflict of interest was reported by the authors.