PAPER / ARXIV:2609.14382
Qikai Wang , Yuxiao Wang , Haiyan Zhu
RESUMO
We give a counterexample to completeness descent from ideal cotorsion pairs to their objects. A radical-square-zero algebra on the two-cycle gives a finite-dimensional example. The construction is intrinsically non-weakly-idempotent-complete.
NO MESMO MAPA