I’m David Lowry-Duda. I’m a Postdoctoral Researcher in the Warwick Mathematics Institute at the University of Warwick. I’m currently supported by an ESPRC grant which allows me to spend a lot of my time contributing to the L-function and Modular Form Database, and open source website and database of interesting mathematical objects. I also contribute to some other open source software, including sage and fundamental linux tools.

At Warwick, I study mathematics. More specifically, I study number theory. As an undergrad, I really enjoyed elementary and additive number theory. As a grad student studying under Dr. Jeff Hoffstein, I studied analytic number theory, arithmetic dynamics, and $L$-functions. Now I still study number theory, but in a slightly broadening context.

**What is number theory?**

I get this question a lot, but I’ve never been really good at answering it. When I took my first number theory class with Dr. Matt Baker, an excellent inspirateur likely responsible for my career path, it was apparent to me: number theory is the study of numbers. We like divisibility tests, primes, or density of special numbers in progression. This encompasses much of what I now call elementary number theory, from the prime number theorem to modern cryptography. But this does not even begin to actually answer the question (this is sort of a Dunning-Kruger classification error).

I think a better question is ‘What is Mathematics?’ Once you see that mathematics is exploratory rather than a series of trite, uninspired exercises, I think number theory arises as the study of the properties of the basic building blocks of whatever system you’re working in. For more, I encourage you to read A Mathematicians Lament by Lockhart.

**Why do you blog?**

Because it helps me reduce how often I need to repeat myself, and because I was inspired by Terry Tao’s blog when I was younger. Much of the material here is for my students, and writing it down here means I’ll have to do less later. I also find that I sometimes repeat the same series or sort of calculation or computation, or get stuck in the same process in papers – so I write it here so that I can easily document it and reuse it later. Further, all articles I write here with math in the post is originally written in $\LaTeX$, and then converted with an increasingly heavily modified version of latex2wp (once I settle down on a way to present my math, I’ll fork this on github). This gives me that little extra push to TeX up my notes for talks I give, some of which I’ve already reused, or to TeX up parts of my research along the way.

I also use this site as a way to distribute and communicate my math research, including the rationale behind certain approaches and some of the less successful attempts along the way.

I also spend a good part of my time programming, and trying to conjure a way to work this into my career. You see, I will be a mathematician. But I’d like to program too.

Finally, I am a big believer of the Do Things, Tell People or Do Things, Write About It philosophy. In short, do cool things. Along the way, google is your friend. If it hasn’t been done before, or hasn’t been done well, then document your own path. Write about it. Do cool things, write about it.

**Contacting me**

Should anyone want to contact me, don’t hesitate. Shoot me an email at djlowry@math.brown.edu, david@lowryduda.com, or comment here.

I’m davidlowryduda on keybase. I’ve signed that here as well. My keybase public key is attainable on this site.

You might also run across me on the web. I’m a moderator at math.stackexchange, and exist in various other fora and sites as either mixedmath or davidlowryduda.

There’s also the original and free wordpress version of my blog at mixedmath.wordpress.com. I’m still building this site, and I’m not certain about sticking with wordpress. It’s a work in progress, certain to be changed or updated.

For those close enough for this to make sense, you can often find me in my office at Brown University.

*Disclaimer: I have been off and on the gracious support of the NSF in the past. They want me to remind you: “Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.”*

you are awesome.

I’m currently living in the Land of the Lowry’s. I was wondering if you lived out this way also, however I guess not (.gatech.edu). Anyway, Love your blog and your posts in the forum.

Frea.

Hi,

You recently deleted a post I made on Stack Exchange: (http://math.stackexchange.com/questions/66077/how-to-find-the-expected-number-of-boxes-with-no-balls/) and I’m not sure why. I edited it to contain more content on actually calculating a solution, but showing a counterexample to why the currently accepted solution is not right seems like reason enough for the post. I couldn’t figure out how to message you on StackExchange, so messaged you here.

Rob

Come on mr so called moderator, read it http://math.stackexchange.com/questions/1880605/elementary-ways-to-show-zeta-1-1-12/1880630 and read what I wrote on MSE the last week, and look at : who annoyed me, who insulted me, and end asking yourself : isn’t it normal after that he is upset, having helped so many people on MSE ?