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J-class properties under a surjective homomorphism

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#abstract-algebra #semigroups #finite-semigroups #semigroup-homomorphism
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Minimal generating set of union two isomorphic semigroups

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#semigroups #finite-semigroups
37
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Semigroups with the property $S=S^1(S\setminus S^2)$

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#semigroups #finite-semigroups
40
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The Extension Problem and Krohn-Rhodes

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#abstract-algebra #finite-semigroups
25
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Does $B(BE\dot{\cup} E)\subset BE\dot{\cup} E$ imply that $B$ is a sub-semigroup?

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#group-theory #finite-groups #semigroups #infinite-groups #finite-semigroups
122
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Finite semigroup

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#semigroups #finite-semigroups
38
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Subsemigroups of finite semigroup

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#semigroups #finite-semigroups
113
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Is a finite semigroup with a unique idempotent $e$ always a group with unit $e$?

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#abstract-algebra #semigroups #idempotents #finite-semigroups
122
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Is there a logarithmic size generating set for some classes of finite semigroups?

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#semigroups #finite-semigroups
73
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The Krull-Schmidt-Remak Theorem for Semigroups and Monoids

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#abstract-algebra #semigroups #monoid #finite-semigroups
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Is there an idempotent element in a finite semigroup?

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#abstract-algebra #alternative-proof #semigroups #idempotents #finite-semigroups
135
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Name the digraph of these transformation subsemigroups

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#abstract-algebra #finite-groups #finite-semigroups
104
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Subsemigroup of S_n(symmetric group) of largest size

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#group-theory #finite-semigroups
451
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If $G$ is a finite semi-group and $\forall x,y,z \in G: xy=yz \implies x=z$ then $G$ is an Abelian group

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#abstract-algebra #finite-semigroups
62
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Showing $\lvert\mathscr{B}_X\rvert=2^{n^2}$.

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#combinatorics #proof-verification #binary #semigroups #finite-semigroups

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