论文标题
真正的树是茂密的
True trees are dense
论文作者
论文摘要
我们表明,任何紧凑的,连接的设置$ k $都可以通过具有两个临界值的多项式的临界点近似。同等地,在Grothendieck的Dessins d'Enfants的意义上,一棵真正的树可以在Hausdorff指标中近似$ k $。
We show that any compact, connected set $K$ in the plane can be approximated by the critical points of a polynomial with two critical values. Equivalently, $K$ can be approximated in the Hausdorff metric by a true tree in the sense of Grothendieck's dessins d'enfants.