Christian Lawson-Perfect<p><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@MoritzFirsching" class="u-url mention">@<span>MoritzFirsching</span></a></span> <a href="https://mathstodon.xyz/tags/ProofInAToot" class="mention hashtag" rel="tag">#<span>ProofInAToot</span></a>. No, better: <a href="https://mathstodon.xyz/tags/FormalProofInAToot" class="mention hashtag" rel="tag">#<span>FormalProofInAToot</span></a>!</p>