David Roberts David Roberts

This is the private area of David Roberts within the nLab.

I am a visiting fellow at the University of Adelaide in South Australia, and was a postdoc there for a couple of years.

For my papers (including PhD thesis) please see here. This site is to gather teaching material, but also more ephemeral things.

  • See here for a list of my talks.

  • See here for a list of the courses I’ve taught as well as students who’ve worked on projects with me

  • here is a list of unicode/TeX equivalents


  • Theorem A for topological categories - this is a version of Quillen’s Theorem A for categories in TopTop. As a corollary, with a condition on the unit map of the codomain we get that geometric realisation of an 𝒩\mathcal{N}-equivalence is a homotopy equivalence.

  • Serre’s proof of the Grothendieck-Serre theorem on the Brauer group of a compact space. (to be uploaded).

Mathematical publishing

I have views about the current system of academic publishing, especially how it impacts mathematics. Two links of interest:

Less polished ideas

Random ideas

Last revised on September 13, 2017 at 01:28:38. See the history of this page for a list of all contributions to it.