Science1900Germany/Francelow confidence

David Hilbert proposed a list of research problems known as Hilbert's problems.

Notes on verification

Well-documented historical fact confirmed by Wikipedia, MacTutor History of Mathematics, and Britannica, with strong academic consensus. [cascade flags: aggregator_dropped_primary_exists | tier=unverified indep_score=0.375 clusters=1 claim_tier=everyday] [harvest 2026-09-15: +4 source(s) on new hosts; tier unverified->silver indep=0.912 clusters=4] [kind-backfill 2026-09-15: kind=attributed eligibility=high]

Sources