14 citations · 31 across the 13 of their papers we have counts for
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math.AC2019
The Structure of Ulrich ideals in hypersurfaces
Ryotaro Isobe
This paper studies Ulrich ideals in hypersurface rings. A characterization of Ulrich ideals is given. Using the characterization, we construct a minimal free resolution of an Ulric…
math.AC2019★ 14 cited
Almost Gorenstein rings arising from fiber products
Naoki Endo, Shiro Goto, Ryotaro Isobe
The purpose of this paper is, as part of the stratification of Cohen-Macaulay rings, to investigate the question of when the fiber products are almost Gorenstein rings. We show tha…
math.AC2019★ 1 cited
Ulrich ideals and 2-AGL rings
Shiro Goto, Ryotaro Isobe, Naoki Taniguchi
The notion of 2-almost Gorenstein local ring (2-AGL ring for short) is a generalization of the notion of almost Gorenstein local ring from the point of view of Sally modules of can…