mathlib3

aa5ec528 - feat(group_theory/perm/cycles): Applying cycle_of to an is_cycle (#7000)

feat(group_theory/perm/cycles): Applying cycle_of to an is_cycle (#7000) Applying cycle_of to an is_cycle gives you either the original cycle or 1. Co-authored-by: tb65536 <tb65536@users.noreply.github.com>