jnpn<p>Trying to learn σ-algebra I was happy to realize the inclusion relationship between them and powersets</p><p><a href="https://mastodon.social/tags/probabilitytheory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>probabilitytheory</span></a> <a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a></p>