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Classification of dfg groups over C((t)) as virtually split solvable algebraic groups

Determine whether every group G definable in C((t)) that admits a definably f-generic (dfg) type is virtually a C((t))-split solvable algebraic group; that is, ascertain whether G contains a finite-index subgroup that is a solvable algebraic group split over C((t)).

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Background

Definably f-generic (dfg) groups play a key role in the modern theory of definable groups, with parallels drawn from p-adically closed fields where dfg often correlates with solvable algebraic structure.

The conjecture seeks to extend such structural classifications to groups definable over C((t)), positing that dfg implies being virtually a split solvable algebraic group over the base field.

References

Conjecture 4.4. Let G be a dfg group defined in C((t)). Then G is virtually a C((t))-split solvable algebraic group.

A short note on model theory of C((t)) (2501.12545 - Zhang, 21 Jan 2025) in Conjecture 4.4, Section 4 (More results)