Maximal minors and linear powers

Maximal minors and linear powers
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最大次数和线性幂

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
M. Varbaro
M. Varbaro
中科院分区:
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文献类型:
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作者:
W. Bruns;A. Conca;M. Varbaro

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多项式环S中的理想I具有线性幂,如果I的所有幂I^k具有线性自由分解。证明了具有线性项的充分一般矩阵的极大子式的理想具有线性幂。所需的一般性表示在低阶未成年人的理想的高度。特别是,我们证明了每一个合理的正常滚动线性权力。
An ideal I in a polynomial ring S has linear powers if all the powers I^k of I have a linear free resolution. We show that the ideal of maximal minors of a sufficiently general matrix with linear entries has linear powers. The required genericity is expressed in terms of the heights of the ideals of lower order minors. In particular we prove that every rational normal scroll has linear powers.