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arXiv · 1907.06326

On the Nash problem for terminal threefolds of type $cA/r$

Hsin-Ku Chen
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Abstract

We study Nash valuations and essential valuations of terminal threefolds of type $cA/r$. If $r=1$ or the given threefold is $\mathbb Q$-factorial, then all the Nash valuations and essential valuations can be completely described. We construct non-Gorenstein or non-$\mathbb Q$-factorial counter examples for the Nash problem.

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Hsin-Ku Chen. 2019-07-15. On the Nash problem for terminal threefolds of type $cA/r$. https://arxiv.org/abs/1907.06326

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