I generally go by Paul, and not Holger, which I am told is a name that mostly only older Germans have (thank my mum, who liked the name of an Australian and Triple J’s or, rather, Double J’s first radio DJ called Holger Brockmann, who previously had to work under a pseudonym due to his name being too “foreign”). My preprints and publications will generally have Holger Paul or H. Paul or Paul on them. The inconsistency is mostly due to computer and preprint systems at the research institutes where I have worked, for example, at Inria I needed to have my name as Holger or Holger-Paul (which is wrong, but I am cited as H.-P. Keeler at times).

There are many others with the name Paul Keeler, most of which are in the US.


My general interests include history, science, general knowledge, world affairs, rock-climbing, and travelling. I am a self-confessed, I mean, reformed pub trivia nerd.  I have a fondness for words and languages, among other things. I have a terrible habit of living in a country, learning enough of the local language to read the newspaper, but not enough to get good pronunciation or to tell jokes well. I studied Spanish in Ecuador. I then studied French in Paris, which sort of killed my Spanish. More recently I have tried my luck at German.


Here’s where I brag, I mean, show which countries I’ve been to. Many outside of Europe I did as a poor backpacker, while the ones in Europe I generally did with cheap flights.

I’ve visited 55 out of 217 countries. That is 25.35%.