Containments of symbolic powers of ideals of generic points in $PP^3$
Containments of symbolic powers of ideals of generic points in $PP^3$
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$PP^3$ 中泛型点理想的符号幂的包含
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发表时间:
2012
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通讯作者:
M. Dumnicki
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作者:
M. Dumnicki
We show that the Conjecture of Harbourne and Huneke, $I^{(Nr-(N-1))} subset M^{(r-1)(N-1)}I^{r}$ holds for ideals of generic (simple) points in $PP^3$. As a result, for such ideals we prove the following bounds, which can be recognized as generalizations of Chudnovsky bounds: $alpha(I^{(3m-k)}) geq malpha(I)+2m-k$, for any $m geq 1$ and $k=0,1,2$. Moreover, we obtain lower bounds for the Waldshmidt constant for such ideals.