tag:blogger.com,1999:blog-7307840825023135484.post8175023367623587576..comments2023-04-16T03:44:23.949+12:00Comments on Arcadian Pseudofunctor: All the WeilKeahttp://www.blogger.com/profile/05652514294703722285noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-7307840825023135484.post-23307392973803040262011-02-14T16:21:13.744+13:002011-02-14T16:21:13.744+13:00All right, Carl.All right, Carl.Keahttps://www.blogger.com/profile/05652514294703722285noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-5443879186530756262011-02-14T15:22:08.583+13:002011-02-14T15:22:08.583+13:00Amazing! A couple introductions to Hopf algebra ar...Amazing! A couple introductions to Hopf algebra are finally moving me forward on understanding category theory. I.e. http://web02.gonzaga.edu/faculty/rayr/SpokaneColloquium.pdf and a paper by Selig, "A Very Basic Introduction to Hopf Algebras".CarlBrannenhttps://www.blogger.com/profile/17180079098492232258noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-70445351188139295372011-02-14T13:51:20.120+13:002011-02-14T13:51:20.120+13:00Kea, would you be so kind as to write a post on Ko...Kea, would you be so kind as to write a post on Kopf algebra, especially as it connects with what you're doing? I know it's related, and I'd like to reference it, but it's difficult theory.CarlBrannenhttps://www.blogger.com/profile/17180079098492232258noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-86244259006021927262011-02-14T10:31:20.286+13:002011-02-14T10:31:20.286+13:00That's good, Carl. Ulla, when studying specifi...That's good, Carl. Ulla, when studying specific spaces over general number fields, it turns out that different primes behave differently, and it is useful to play them off against each other. Here, $l$ and $p$ are just two distinct prime numbers. See, for instance, the definition of <a href="http://en.wikipedia.org/wiki/Ramification" rel="nofollow">ramification</a> and <a href="http://en.wikipedia.org/wiki/Galois_module" rel="nofollow">Galois module</a>.Keahttps://www.blogger.com/profile/05652514294703722285noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-70019818666148584122011-02-13T22:17:31.264+13:002011-02-13T22:17:31.264+13:00What is the difference between l and p primes?What is the difference between l and p primes?Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-27508789389943942772011-02-13T10:58:45.620+13:002011-02-13T10:58:45.620+13:00Despite feeling rather hopeless about getting into...Despite feeling rather hopeless about getting into grad school I'm nevertheless honing my physics. And I'm getting drawn deeper into understanding what you and Rios and others are doing.<br /><br />I just figured out that I can rewrite my weak quantum number paper http://brannenworks.com/weakqns.pdf so as to make it a very obvious and natural calculation in a Hopf algebra. I'd overlooked this because my Basic Algebra I book (Jacobson) calls it by a different name, i.e. K[G] a field over a group.<br /><br />If I don't have it written up Tuesday it's cause I'm too lazy to be in this business.CarlBrannenhttps://www.blogger.com/profile/17180079098492232258noreply@blogger.comtag:blogger.com,1999:blog-7307840825023135484.post-35410436869070968902011-02-13T08:47:40.028+13:002011-02-13T08:47:40.028+13:00That is not to say that we cannot start thinking a...That is not to say that we cannot start thinking about concrete infinite mass matrices of countable index, or rather, square root mass matrices that can be paired.Keahttps://www.blogger.com/profile/05652514294703722285noreply@blogger.com