Niven T. Achenjang
Welcome!
I am a math grad student at MIT, broadly interested in arithmetic geometry and especially in points on varieties. My advisor is Bjorn Poonen.
Recently, I have most actively thinking about Brauer groups of stacky curves, but you can find more information on my research in my cv (and probably also under the “news” header below).
I am currently on the job market and am very happy to come talk about my work!
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news
Sep 4, 2024  I attended Oberwolfach’s Explicit Methods in Number Theory workshop, where I gave a talk about some of my recent, ongoing work computing Brauer groups of stacky curves. In particular, I discussed a computation of the Brauer group of a tame stacky curve over an algebraically closed field (unlike in the scheme case, these are often nonzero). 

Jul 9, 2024  I gave a lightning talk at MIT’s Mordell conjecture conference on my 2Selmer work. 
Jun 2, 2024  I spoke at GTA: Philadelphia on mine and Jackson Morrow’s paper constructing irreducible divisors \(D\) for which we can prove finiteness of \(D\)integral points. 
Apr 2, 2024  I will be travelling to Seattle to talk in UW’s Number Theory Seminar on work which appeared in my Brauer paper with Deewang, Aash, Caleb, and Rose. 
Jan 2024 
I gave a talk at JMM this year on my 2Selmer paper. I will also be talking about it again soon at

Nov 29, 2023  Various coauthors and I posted a new paper on arxiv, in which we compute the Brauer group of the moduli stack \(\mathscr Y_0(2)\) parameterizing elliptic curves equipped with a cyclic subgroup of order \(2\). 