mathlib3
b479d3bb - feat(algebra/*): star_ring instances on free_algebra, free_monoid, ring_quot, and quaternion (#4902)

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5 years ago
feat(algebra/*): star_ring instances on free_algebra, free_monoid, ring_quot, and quaternion (#4902) Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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