EntityQ2501020· pop 32· linked from 180 articlesEuler diagramSign in to savegraphical set representation involving overlapping circlesConnectionsLeonhard EulerEntityBoolean algebraEntityClaude ShannonEntityVenn diagramEntityMacmillan PublishersEntitydomain of discourseEntitycanonical normal formEntityTurkeyCountryRussiaCountryFranceCountryItalyCountryGermanyCountryFinlandCountrySpainCountryNorwayCountryUnited KingdomCountryPolandCountryUkraineCountryAlbaniaCountrySwitzerlandCountryCategoriesEponymous diagramsGraphical concepts in set theory