Mathlib v3 is deprecated. Go to Mathlib v4

Theorem is_torsion.not_torsion_free

Modification history

2022-04-21 23:36

src/group_theory/torsion.lean

feat(group_theory/torsion): torsion-free groups and quotients by torsion subgroups (#13173)

Added is_torsion.not_torsion_free View on Github →