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arXiv · 1604.04176

Completely Controlling the Dimensions of Formal Fiber Rings at Prime Ideals of Small Height

Sarah M. Fleming·Lena Ji·S. Loepp·Peter M. McDonald·Nina Pande·David Schwein
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Abstract

Let $T$ be a complete equicharacteristic local (Noetherian) UFD of dimension $3$ or greater. Assuming that $|T| = |T/m|$, where $m$ is the maximal ideal of $T$, we construct a local UFD $A$ whose completion is $T$ and whose formal fibers at height one prime ideals have prescribed dimension between zero and the dimension of the generic formal fiber. If, in addition, $T$ is regular and has characteristic zero, we can construct $A$ to be excellent.

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Sarah M. Fleming, Lena Ji, S. Loepp, Peter M. McDonald, Nina Pande, David Schwein. 2016-04-14. Completely Controlling the Dimensions of Formal Fiber Rings at Prime Ideals of Small Height. https://arxiv.org/abs/1604.04176

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