EntityQ3291120· pop 9· linked from 44 articlesclass number formulaSign in to savemathematic formulaConnectionsDirichlet L-functionEntityquadratic fieldEntityDirichlet's unit theoremEntityideal class groupEntityArtin L-functionEntityInternational Standard Book NumberEntityfunctionEntitynumber theoryEntityJohann Peter Gustav Lejeune DirichletEntityRiemann hypothesisEntityabelian groupEntityRiemann zeta functionEntityidealEntityErnst KummerEntitydiscriminantEntityalgebraic number fieldEntitymeromorphic functionEntitySpringer Science+Business MediaEntityquadratic formEntityroot of unityEntityCategoriesAlgebraic number theoryQuadratic forms