2 problems

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Inversion conjecture for uniquely 2-divisible completely regular semigroups
At least 12 years old
Inversion conjecture. Then
opencompletely-regular-semigroups semigroup-automorphisms
07
Finite-order injectivity conjecture for inverse semigroups
About 13 years old
Finite-order injectivity conjecture. Then
openinverse-semigroups semigroup-automorphisms
06