Commit 2020-04-29 17:26 e6491de7
View on Github →chore(data/equiv/ring): make ring_aut reducible (#2563)
This makes the coercion to fun work. This is the same approach as we used for perm and it worked okay for perm.
Related Zulip thread: https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/ring_aut.20coerce.20to.20function