category-theory-presentation/categories/30_How/200_Monads/130_Monads_are_just_Monoids.html
2013-02-28 16:49:12 +01:00

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<h2 id="monads-are-just-monoids">Monads are just Monoids</h2>
<blockquote>
<p>A Monad is just a monoid in the category of endofunctors, what's the problem?</p>
</blockquote>
<p>The real sentence was:</p>
<blockquote>
<p>All told, a monad in X is just a monoid in the category of endofunctors of X, with product × replaced by composition of endofunctors and unit set by the identity endofunctor.</p>
</blockquote>