# Differences

This shows you the differences between two versions of the page.

semigroups [2018/05/06 00:52] jipsen |
semigroups [2018/05/06 00:54] (current) jipsen |
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==Morphisms== | ==Morphisms== | ||

Let $\mathbf{S}$ and $\mathbf{T}$ be semigroups. A morphism from $\mathbf{S}$ | Let $\mathbf{S}$ and $\mathbf{T}$ be semigroups. A morphism from $\mathbf{S}$ | ||

- | to $\mathbf{T}$ is a function $h:Sarrow T$ that is a homomorphism: | + | to $\mathbf{T}$ is a function $h:S\to T$ that is a homomorphism: |

$h(xy)=h(x)h(y)$ | $h(xy)=h(x)h(y)$ | ||

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\end{array}$ | \end{array}$ | ||

- | [[Search for finite semigroups]] | ||

[http://oeis.org/A027851 Semigroups in the Encyclopedia of Integer Sequences] | [http://oeis.org/A027851 Semigroups in the Encyclopedia of Integer Sequences] | ||

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