The small finitistic dimensions of commutative rings, III
This paper establishes a characterization of the small finitistic dimension of a commutative ring R in terms of the vanishing of Ext groups for finitely generated ideals, proving that fPD(R)≤d if and only if the vanishing of ExtRi(R/I,R) for i=0,…,d implies its vanishing for all i≥0, and applies this result to derive the inequality fPD(R)≤FP-IdRR and analyze various classes of rings such as (n,d)-rings and DW-rings.
Xiaolei Zhang2026-03-06🔢 math