10 lines
451 B
HTML
10 lines
451 B
HTML
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<h2>Degenerated Categories: Monoids</h2>
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<img class="right" style="max-width:17%" src="categories/img/mp/monoid.png" alt="Monoids are one object categories"/>
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<p>Each Monoid \((M,e,⊙): \ob{M}=\{∙\},\hom{M}=M,\circ = ⊙\)</p>
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<p class="yellow">Only one object.</p>
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<p>Examples:</p>
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<ul><li><code>(Integer,0,+)</code>, <code>(Integer,1,*)</code>,
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</li><li><code>(Strings,"",++)</code>, for each <code>a</code>, <code>([a],[],++)</code>
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</li></ul>
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