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For questions from continuum theory. A continuum is a compact connected metric space (sometimes this term is used for a compact connected Hausdorff space).

2 votes

Planar compact connected set whose boundary has a finite length is arcwise connected

The answer is positive. First suppose that $K=\partial K$. I will show that in this case $K$ is the image of a curve. By definition of Hausdorff measure, for every $\epsilon>0$ we can cover $K$ with o …
Alexandre Eremenko's user avatar
3 votes

The number of components of the preimage of a continuum for a polynomial

Yes, you can. First construct a Jordan domain $D$ which contains your continuum and does not contain any critical values. (To do this map the simply connected domain $\overline{\mathbf{C}}\setminus N$ …
Alexandre Eremenko's user avatar