EntityQ5318387· pop 8· linked from 20 articlesdyadSign in to savetitle used by the Pythagoreans for the number two, representing the principle of "twoness" or "otherness"ConnectionsmonadEntityphilosophyEntityPythagorasEntityInternational Standard Book NumberEntityidealismEntityPlotinusEntityNeoplatonismEntityPythagoreanismEntitydemiurgeEntityNousEntityNumenius of ApameaEntityneopythagoreanismEntityCalcidiusEntitytetractysEntityCategoriesConcepts in ancient Greek metaphysicsPythagorean philosophy