Finitely generatedness of continuously homogeneous indecomposable planar continua

A continuum is a compact connected metrizable space. A continuum is indecomposable if it cannot be written as the union of two proper subcontinua. A continuum is planar if it embeds in the plane. It is finitely generated if either it does not embed essentially into S1×I\mathbb{S}^1\times I^\infty, or it embeds essentially into S1×I\mathbb{S}^1\times I^\infty and there exists a continuum XX^* in Σ\Sigma such that τ(X)=X\tau(X^*)=X.

Finitely generatedness conjecture. Any continuously homogeneous indecomposable planar continuum is finitely generated.

This is the specific conjecture associated with the finitely generated class. The supplied text gives no resolution; it also notes examples of continua that are not finitely generated, including certain inverse limits and self-entwined circle-like continua.

Sources & referencesView supporting material

Primary source

Jan Boroński, David Prier, Michel Smith and Frank Sturm, “Continuously homogeneous hereditarily indecomposable continua are tree-like”, arXiv:2606.25563 (2026).

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