Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
Updated
Evidence for the Problem 18 reconstructions
verify/: Ten independent focused reviews of the Problem 18 reconstruction pages as of 2026-09-28T05:03:27Z, one per page, and one distinct grade of the ten reports; focused records that carry no tier.
The folder holds the review records of the Problem 18 research folder under verify/: ten independent focused reviews of the reconstruction pages and one distinct grade of the ten reports. No executable evidence is required: every page is an algebraic or analytic reconstruction checked by hand against the held PDFs, which sit under their library source cards, van Doorn (2026) and Hughes (2026). Rendered page images are disposable reading aids, not native proof inputs. These records confer no tier, no independently accepted proof coverage and no change of status.