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15
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What is the algebraic structure of sets with a “splitting” operation?

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#abstract-algebra #geometry #semigroups
68
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Some weaker axiom than "no nontrivial zero divisors."

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#abstract-algebra #ring-theory #terminology #axioms #semigroups
74
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Left and Right Inverses with semigroups

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#inverse #semigroups #inverse-semigroups
61
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Question about kinda-sorta identities in algebra

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#linear-algebra #abstract-algebra #semigroups
465
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What is the right (a good) definition for a dual monoid?

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#abstract-algebra #semigroups #duality-theorems #monoid
365
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A semigroup with three or four elements without identity

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#examples-counterexamples #semigroups
159
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The identity elements of two multiplication satisfying interchange law.

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#abstract-algebra #category-theory #semigroups #universal-algebra
1.2k
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Let $G$ be a semigroup. If for any $a,b\in G$, the equations $ax=b$ and $ya=b$ are solvable, then $G$ is a group.

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#abstract-algebra #semigroups
621
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Is there a name for an element $z$ such that $\,zx = z = xz\,$ for all $x$?

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#semigroups #monoid #magma
37
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Order of calculation in a Semigroup.

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#semigroups #associativity
1.6k
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Build a Markov process from a transition semigroup

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#real-analysis #probability-theory #markov-process #semigroups
110
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Computing the shortest encoding for a transformation

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#semigroups #monoid
332
Views

Free idempotent semigroup with 3 generators

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#combinatorics #semigroups #universal-algebra
101
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Is my proof of the following correct?

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#abstract-algebra #semigroups
70
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Foundation Semigroups Examples

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#harmonic-analysis #semigroups

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