The Insolvability of the Quintic

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The Oldest Unsolved Problem in Math

Algebraic number theory - an illustrated guide | Is 5 a prime number?

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What is Solvability in Galois Theory?

How Imaginary Numbers Were Invented

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Why There's 'No' Quintic Formula (proof without Galois theory)

Tesla’s 3-6-9 and Vortex Math: Is this really the key to the universe?

Galois Theory Explained Simply

Visual Group Theory, Lecture 6.1: Fields and their extensions

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Grant Sanderson (3Blue1Brown) | Unsolvability of the Quintic | The Cartesian Cafe w/ Timothy Nguyen

The Insane Math Of Knot Theory

Thales's Theorem

How to Get to Galois Theory Naturally

Ultimate Recipe to Construct Every Finite Group - Group Extensions and Computational Group Theory

Galois theory: Field extensions