11 lines
324 B
HTML
11 lines
324 B
HTML
<h2>Degenerated Categories: Preorders \((P,≤)\)</h2>
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<ul><li>\(\ob{P}={P}\),
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</li><li>\(\hom{x,y}=\{x≤y\} ⇔ x≤y\),
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</li><li>\((y≤z) \circ (x≤y) = (x≤z) \)
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</li></ul>
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<p><em class="yellow">At most one morphism between two objects.</em></p>
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<img src="categories/img/mp/preorder.png" alt="preorder category"/>
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