Categorifying cardinal arithmetic [pdf]

#1

Post by raattgift » Mon, Aug 06, 2018, 10:13 PM UTC

Categorifying cardinal arithmetic [pdf]
math.jhu.edu

Re: Categorifying cardinal arithmetic [pdf]

#2

Post by seanmcdirmid » Tue, Aug 07, 2018, 7:05 AM UTC

PDF slide builds really don’t work for the web.

Re: Categorifying cardinal arithmetic [pdf]

#3

Post by aban » Tue, Aug 07, 2018, 7:45 AM UTC

seanmcdirmid wrote: post #2

PDF slide builds really don’t work for the web.

Not to disagree; but if you use Firefox, PDF.js has some convenient shortcuts [0]: n/j to go to next page, and p/k to go to previous page.

Works quite nicely for flipping through PDF slides.

[0]: https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Ques...

Re: Categorifying cardinal arithmetic [pdf]

#4

Post by JadeNB » Tue, Aug 07, 2018, 11:41 AM UTC

This is a pleasant but intentionally very elementary summary of the relevant concepts. If you're interested in much more on this, one place to start is MO (https://mathoverflow.net/questions/4841/what-precisely-is-ca...), or the n-Category Café (https://golem.ph.utexas.edu/category/2008/10/what_is_categor...), or Baez's TWF 121 (http://math.ucr.edu/home/baez/week121.html).

Warning: all are much math-ier than Riehl's very nice slides, although the first one has enough content that you may find an answer that you like. If your math itch still isn't scratched, there's Baez and Dolan's paper "Categorification" (https://arxiv.org/abs/math/9802029). I don't know a programmer-focussed view on categorification; can anyone recommend one?