EntityQ1227702· pop 13· linked from 37 articlesDirichlet's unit theoremSign in to savetheoremConnectionsquadratic fieldEntitySpringer Science+Business MediaEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityreal numberEntitygolden ratioEntitydeterminantEntityringEntityJohann Peter Gustav Lejeune DirichletEntityabelian groupEntitycomplex conjugateEntityalgebraic number theoryEntityalgebraic number fieldEntityAmerican Mathematical SocietyEntitycyclic groupEntityPell's equationEntityHelmut HasseEntitySerge LangEntityMathematical ReviewsEntityCategoriesTheorems in algebraic number theory