12 citations · 28 across the 16 of their papers we have counts for
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math.RT2015★ 4 cited
On steady non-commutative crepant resolutions
Osamu Iyama, Yusuke Nakajima
We introduce special classes of non-commutative crepant resolutions (= NCCR) which we call steady and splitting. We show that a singularity has a steady splitting NCCR if and only…
math.AC2015
Ulrich modules over cyclic quotient surface singularities
Yusuke Nakajima, Ken-ichi Yoshida
In this paper, we characterize Ulrich modules over cyclic quotient surface singularities by using the notion of special Cohen-Macaulay modules. We also investigate the number of in…