---
layout: default
---
<header>
<h1>
  <a href="https://apropos.codes">apropos</a>
</h1>
<div>
  <nav>
    <b><a href="/mathematics">mathematics</a></b>
    <a href="/linguistics">linguistics</a>
    <a href="/computation">computation</a>
    <a href="/ctf">ctf</a>
  </nav>
  <nav>
    <a href="/mathematics/foundations">foundations</a>
    <a href="/mathematics/algebra">algebra</a>
    <a href="/mathematics/analysis">analysis</a>
  </nav>
</div>
</header>
<main>
{{ content }}
</main>