Algebraic fields Algebraic number theory Number theory Number theory -- Algebraic number theory: global fields -- Class numbers, class groups, discriminants Number theory -- Algebraic number theory: global fields -- Quadratic extensions Number theory -- Algebraic number theory: global fields -- Units and factorization Number theory -- Computational number theory -- Algebraic number theory computations Number theory -- Elementary number theory -- Continued fractions Number theory -- Forms and linear algebraic groups -- General binary quadratic forms Number theory -- Forms and linear algebraic groups -- Sums of squares and representations by other particular quadratic forms Number theory -- Sequences and sets -- Sequences (mod $m$) Quadratic fields