mathlib3
541c80d6 - feat(group_theory/index): Golf proof of `relindex_eq_zero_of_le_left` (#13014)

Commit

4 years ago

feat(group_theory/index): Golf proof of `relindex_eq_zero_of_le_left` (#13014) This PR uses `relindex_dvd_of_le_left` to golf the proof of `relindex_eq_zero_of_le_left`.

Author

tb65536

Parents

e109c8f6

mathlib3 541c80d6 - feat(group_theory/index): Golf proof of `relindex_eq_zero_of_le_left` (#13014)

mathlib3
541c80d6 - feat(group_theory/index): Golf proof of `relindex_eq_zero_of_le_left` (#13014)