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ncatlab.org | ||
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www.jeremykun.com
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| | | | | Last time we worked through some basic examples of universal properties, specifically singling out quotients, products, and coproducts. There are many many more universal properties that we will mention as we encounter them, but there is one crucial topic in category theory that we have only hinted at: functoriality. As we've repeatedly stressed, the meat of category theory is in the morphisms. One natural question one might ask is, what notion of morphism is there between categories themselves? | |
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rakhim.org
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qchu.wordpress.com
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| | | | | Let $latex k$ be a commutative ring. A popular thing to do on this blog is to think about the Morita 2-category $latex \text{Mor}(k)$ of algebras, bimodules, and bimodule homomorphisms over $latex k$, but it might be unclear exactly what we're doing when we do this. What are we studying when we study the Morita... | |
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craftofcoding.wordpress.com
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| | | Programming Made Easy The basics of Programming The Basics of julia Coding in Fortran Coding in ada | ||
