📜 Theorem, law or theory

Kronecker–Weber theorem

Teorema de Kronecker-Weber

Date
1853-1896 · confidence low
Place
Berlin, Germany
Credited to
Leopold Kronecker and Heinrich Weber
Field
Knowledge & symbols

What was discovered

Theorem in algebraic number theory showing that every finite abelian extension of the rationals is contained in some cyclotomic field; stated by Kronecker in 1853 and proved in stages up to Hilbert.

What it led to

  • Boost to class field theory
  • Later simplifications of the proof, including Hilbert's
  • Basic tool of modern algebraic number theory

Links

Sources✓ verified 2026-09-28