The type-definable subgroup inclusion conjecture for group extensions

About 14 years old · traced to

Let (G∗~,A∗,G∗)(\widetilde{G^*},A^*,G^*) be in Situation (0)(0), and let BB be the parameter set used to define the connected components. Suppose

G∗B000=G∗B00.{G^*}^{000}_B={G^*}^{00}_B.

Let HH be a BB-invariant subgroup of G∗~\widetilde{G^*} of bounded index such that H∩A∗H\cap A^* is type-definable. Type-definable subgroup inclusion conjecture. Then

G∗~B00∩A∗⊆H∩A∗.\widetilde{G^*}^{00}_B\cap A^*\subseteq H\cap A^*.

This conjecture is stated as equivalent to the preceding conjecture and generalizes the nearby corollary; the supplied text gives no proof or disproof, so the assertion remains open.

References

Primary source

Jakub Gismatullin and Krzysztof Krupinski, “On model-theoretic connected components in some group extensions”, arXiv:1201.5221 (2013).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.