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title: Sebastian Schlegel Mejia
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---
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<p>
    I am a postdoc working with the <a href="https://www.epfl.ch/labs/arg/" >Chair of Arithmetic Geometry</a> at EPFL.
</p>


<p>
    Please don't hesitate to email: <a href="mailto:sebastian.schlegelmejia@epfl.ch"> sebastian.schlegelmejia@epfl.ch</a><a href="https://en.wikipedia.org/wiki/The_Game_(mind_game)">.</a>
</p>

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<h3>
    upcoming
</h3>
I am giving a talk at the workshop <a href="https://sites.google.com/view/dtcats24/"> DT theory and derived categories</a> in Paris. -->
<h3>
    research
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research interests
</h3>
<p>
My general interests lie in moduli spaces and enumerative geometry. More specifically, I have
been interested in categorified Donaldson&ndash;Thomas theory, cohomology and derived categories
of moduli spaces, and cohomological/categorical Hall algebras.
</p> -->

<p>
<ol reversed>
    <li>
        <a href="https://arxiv.org/abs/2303.12592"> BPS algebras and generalised Kac&ndash;Moody algebras from
            2-Calabi&ndash;Yau categories</a>, joint with <a href="https://sites.google.com/site/bendavisonmath/">Ben
            Davison</a> and <a href="https://www.maths.ed.ac.uk/~lhenneca/">Lucien Hennecart</a>, March 2023 (submitted)
    </li>

    <li><a href="https://arxiv.org/abs/2212.07668">
            BPS Lie algebras for totally negative 2-Calabi&ndash;Yau categories and nonabelian Hodge theory for
            stacks</a>, joint with Ben Davison and Lucien Hennecart, December 2022 (submitted) </li>

    <li><a href="https://arxiv.org/abs/2201.09962">
            BPS cohomology for rank 2 degree 0 Higgs bundles (and more)</a>, <a
            href="https://doi.org/10.1016/j.jalgebra.2023.08.037"> Journal of Algebra, Volume 636, 2023, pp.
            666-694 </a> </li>
</ol>
</p>

<p>
    Versions of this list can be found on my <a href="https://arxiv.org/a/schlegelmejia_s_1.html">arXiv</a>, <a
    href="https://scholar.google.com/citations?hl=en&user=pc9n1pIAAAAJ">Google Scholar</a>, and <a
    href="https://orcid.org/0000-0001-6782-2533">ORCID: 0000-0001-6782-2533</a>
</p>
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