2 papers
math.AG2025
Nearly Gorenstein rational surface singularities
Kyosuke Maeda, Tomohiro Okuma, Kei-ichi Watanabe +1
In this paper, we show that for any rational surface singularity , the canonical trace ideal is an integrally closed ideal, which is represented by the mini…
math.AC2025
Ulrich ideals on rational triple points of dimension two
Kyosuke Maeda, Ken-ichi Yoshida
In this paper, we prove the canonical trace ideal trace(omega_A) is an Ulrich ideal for any two-dimensional rational triple point A. Using this, we classify all Ulrich ideals on ra…