<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="../assets/xml/rss.xsl" media="all"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Lean community blog (Posts by Johan Commelin)</title><link>https://leanprover-community.github.io/blog/</link><description></description><atom:link href="https://leanprover-community.github.io/blog/authors/johan-commelin.xml" rel="self" type="application/rss+xml"></atom:link><language>en</language><copyright>Contents © 2026 &lt;a href="mailto:"&gt;The Lean prover community&lt;/a&gt; </copyright><lastBuildDate>Mon, 07 Sep 2026 03:26:30 GMT</lastBuildDate><generator>Nikola (getnikola.com)</generator><docs>http://blogs.law.harvard.edu/tech/rss</docs><item><title>Backstage with Yakov Pechersky</title><link>https://leanprover-community.github.io/blog/posts/backstage-with-pechersky/</link><dc:creator>Johan Commelin</dc:creator><description>&lt;div&gt;&lt;p&gt;&lt;a href="https://leanprover-community.github.io/blog/images/yakov_pechersky.png" class="image-reference"&gt;&lt;img src="https://leanprover-community.github.io/blog/images/yakov_pechersky.thumbnail.png" class=" align-right"&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;The next installment in the series of
backstage interviews with mathlib's active contributors!&lt;/p&gt;
&lt;p&gt;Today, Johan Commelin interviews Yakov Pechersky.
The first half of the interview's video was lost, so it was "recovered"
via written communication.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://leanprover-community.github.io/blog/posts/backstage-with-pechersky/"&gt;Read more…&lt;/a&gt; (23 min remaining to read)&lt;/p&gt;&lt;/div&gt;</description><category>backstage</category><guid>https://leanprover-community.github.io/blog/posts/backstage-with-pechersky/</guid><pubDate>Thu, 27 Jan 2022 07:35:23 GMT</pubDate></item><item><title>Liquid Tensor Experiment: an update</title><link>https://leanprover-community.github.io/blog/posts/lte-update/</link><dc:creator>Johan Commelin</dc:creator><description>&lt;div&gt;&lt;p&gt;In June 2021, we &lt;a href="https://xenaproject.wordpress.com/2021/06/05/half-a-year-of-the-liquid-tensor-experiment-amazing-developments/"&gt;celebrated&lt;/a&gt;
the first milestone of the Liquid Tensor Experiment.
The achievement was covered in
&lt;a href="https://www.nature.com/articles/d41586-021-01627-2"&gt;Nature&lt;/a&gt;
and
&lt;a href="https://www.quantamagazine.org/lean-computer-program-confirms-peter-scholze-proof-20210728/"&gt;Quanta&lt;/a&gt;.
Since then, we haven't been sitting still, and it's high time for a status update.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://leanprover-community.github.io/blog/posts/lte-update/"&gt;Read more…&lt;/a&gt; (4 min remaining to read)&lt;/p&gt;&lt;/div&gt;</description><guid>https://leanprover-community.github.io/blog/posts/lte-update/</guid><pubDate>Fri, 31 Dec 2021 19:04:21 GMT</pubDate></item><item><title>Backstage with Yaël Dillies</title><link>https://leanprover-community.github.io/blog/posts/backstage-with-dillies/</link><dc:creator>Johan Commelin</dc:creator><description>&lt;div&gt;&lt;p&gt;&lt;a href="https://leanprover-community.github.io/blog/images/yael_dillies.jpg" class="image-reference"&gt;&lt;img src="https://leanprover-community.github.io/blog/images/yael_dillies.thumbnail.jpg" class=" align-right"&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;We're introducing a new category of blog post:
backstage interviews with mathlib's active contributors!&lt;/p&gt;
&lt;p&gt;Today, Johan Commelin interviews Yaël Dillies.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://leanprover-community.github.io/blog/posts/backstage-with-dillies/"&gt;Read more…&lt;/a&gt; (16 min remaining to read)&lt;/p&gt;&lt;/div&gt;</description><category>backstage</category><guid>https://leanprover-community.github.io/blog/posts/backstage-with-dillies/</guid><pubDate>Fri, 17 Dec 2021 07:35:23 GMT</pubDate></item></channel></rss>