category theory
Tag details
Welcome to the 'category theory' tag page at Technorati. This page features content from the farthest reaches of the Blogosphere that authors have "tagged" with 'category theory'.
Latest blogosphere posts tagged “category theory”
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Concretizable Categories
memoirs on a rainy day —
Authority: 142
As some topological spaces can be metrizable , the same can be said of categories. Certain categories can be concretizable , if they are isomorphic to a concrete category. I must be making progress as I understood almost everything in that post from David Speyer. Posted in asides, mathematics Tagged: algebraic ...2 weeks ago -
Concrete Categories
Secret Blogging Seminar —
Authority: 526
In many introductions to category theory, you first learn the notion of a concrete category: A concrete category is a collection of sets, called the objects of the category and, for each pair of objects, a subset of the maps . (There are, of course, axioms that these things must obey.) In a concrete category, the ...2 weeks ago -
Germs & Sheaves
memoirs on a rainy day —
Authority: 142
Hyperbolic triangle, via Wikipedia I I spent most of the day reading up on differentiable manifolds , Riemann surfaces , germs , and sheaves . Some of the concepts are extremely interesting since they tie into category theory. This led me to differential geometry . I supposed that differential geometry had ...2 weeks ago -
Categorically Yours & Typographical Musings†
memoirs on a rainy day —
Authority: 142
Okamis Lamy fountain pens I One of the marks of being a good prof is when they see that students didn’t understand something and go over it again. My algebra prof has made a habit of this, especially when he goes over stuff in class too quickly. This happened last week and left me quite furious . Someone must ...2 weeks ago -
Mathematical Teaching Methods
memoirs on a rainy day —
Authority: 142
Snake Lemma, via Wikipedia I It seems to me quite logical on how math classes should proceed. The professor presents some theory, with theorems and their demonstration, as well as definitions and propositions, before venturing into a slew of examples. For some reason, this is completely absent from my classes in ...4 weeks ago -
Renormalization and Computation 4
reperiendi —
Authority: 106
This is the fourth in a series of posts on Yuri Manin’s pair of papers . In the previous posts, I laid out the background; this time I’ll actually get around to his result. A homomorphism from the Hopf algebra into a target algebra is called a character . The functor that assigns an action to a path, ...4 weeks ago
