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

I am a postdoctoral research fellow at the University of Adelaide in South Australia.

For my papers (including PhD thesis) please see here. This page is to gather more ephemeral things.

## Talks

• Localisations of 2-categories - Australian category seminar, October 2011
• 2-covering spaces 2-covering spaces - 2009 Annual Meeting of the Australian Mathematical Society, at the University of South Australia. 30 September 2009

## Notes

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

## Mathematical publishing

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

I posted a lot of information about publishing on Google+ in the period February 2012 to May 2012. I have since removed my Google+ account, but you can access what I posted at thoughts on publishing?.