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arXiv 0902.4454math.AG
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参数化超曲面的GIT子元上的堆栈结构

Stack structures on GIT quotients parametrizing hypersurfaces

Martin G. Gulbrandsen

摘要:

我们建议赋予Mumford的GIT商计划与堆栈结构,通过替换Proj(-)的不变环与堆栈理论的类似。我们分析堆栈导致这种方式从经典研究的不变环,特别是二进制形式的低程度。我们的观点是,堆栈结构携带有趣的几何信息,这些信息本质上存在于不变环中,但在传递到其Proj(-)时丢失。

英文摘要:

We suggest to endow Mumford's GIT quotient scheme with a stack structure, by replacing Proj(-) of the invariant ring with its stack theoretic analogue. We analyse the stacks resulting in this way from classically studied invariant rings, and in particular for binary forms of low degree. Our viewpoint is that the stack structure carries interesting geometric information that is intrinsically present in the invariant ring, but lost when passing to its Proj(-).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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