.. title: PAR Class 27,  Thu 2022-04-21
.. slug: class27
.. date: 2022-04-21
.. tags: class
.. category: 
.. link: 
.. description: 
.. type: text
.. has_math: true

.. raw:: html

   <style> .red {color:red} </style>
   <style> .blue {color:blue} </style>

.. role:: red
.. role:: blue

.. sectnum::
.. contents:: Table of contents
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No lecture today
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Watch some videos that I listed in class 26 but didn't show.