Finiteness conjecture for nontrivial logarithmic class groups
Let be a fixed number field. Assume that satisfies the Leopoldt and Gross–Kuz'min conjectures for every prime. Let denote the logarithmic class group of at the prime .
Finiteness conjecture for logarithmic class groups. The set
is finite.
This predicts that only finitely many primes yield a nontrivial logarithmic class group for a fixed field satisfying the stated universal conjectural hypotheses. The source gives no evidence of resolution.
References
Primary source
Georges Gras, “On the Z_p-extensions of a totally p-adic imaginary quadratic field – With an appendix by Jean-François Jaulent”, arXiv:2403.16603 (2026).
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