Group Theory: Lagrange’s Theorem and the Sudoku Principle

Voltaire said to not let the perfect be the enemy of the good. In that spirit, I’ve decided to post a few (highly imperfect) video lectures I recently on group theory. There’s a lot of things I would do to go back and improve these lectures, but I hope that the content makes up for any flaws!

There will be a third one coming soon, and will be a working-through of an example that shows the power of Lagrange’s theorem. This format is a bit of an experiment for me, and I’ll keep working to make it better. I hope you enjoy!

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