<p>I like studying the zeros of functions.  <a href="http://math.stackexchange.com/search?tab=votes&amp;q=user%3a5531%20%5broots%5d+is%3Aanswer">Here's a list of my answers on the topic</a> here on Math.SE.  I also enjoy answering questions about <a href="http://math.stackexchange.com/search?tab=newest&amp;q=user%3a5531%20%5basymptotics%5d%20is%3aanswer">asymptotics</a> in general.</p>
<p>Check out <a href="http://meta.math.stackexchange.com/q/21746/5531">my attempt to add real-time previews</a> for comments here on Stack Exchange.</p>
<p>Also take a look at <a href="https://szego.github.io/scalinglimit.html" rel="nofollow noreferrer">this problem sequence</a> which guides the reader through an application of the saddle point method and derives the equation of the famous Szegő curve.</p>
<p><em>My avatar is cropped from <a href="http://garyckarntzen.deviantart.com/art/Ground-control-to-Major-Tom-368830592" rel="nofollow noreferrer">this image</a> by Garyck Arntzen.</em></p>

Antonio Vargas