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arXiv 1105.0258math.AGmath.AC
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P^3中泛点理想的符号幂

Symbolic powers of ideals of generic points in P^3

Marcin Dumnicki

摘要:

B. Harbourne和C. Huneke指出,对于$P^N$中脂肪点的任何理想$I$,其$r$次符号幂$I^{(r)}$应包含在$M^{(N-1)r}I^r$中,其中$M$表示$P^N$的坐标环中的齐次极大理想.我们表明,这一猜想持有理想的任何数量的简单(不胖)点在一般位置的$P^3$和最多的$N+1$简单点在一般位置的$P^N$。作为推论,我们在$P^3$中的泛点的情况下,对Chudnovsky猜想给出了肯定的回答.

英文摘要:

B. Harbourne and C. Huneke conjectured that for any ideal $I$ of fat points in $P^N$ its $r$-th symbolic power $I^{(r)}$ should be contained in $M^{(N-1)r}I^r$, where $M$ denotes the homogeneous maximal ideal in the ring of coordinates of $P^N$. We show that this conjecture holds for the ideal of any number of simple (not fat) points in general position in $P^3$ and for at most $N+1$ simple points in general position in $P^N$. As a corollary we give a positive answer to Chudnovsky Conjecture in the case of generic points in $P^3$.

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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