Galois Theory II - Historical Introduction to Polynomial Equations

Delve into the historical development of Galois theory in this 30-minute mathematics lecture. Explore Galois' groundbreaking insights on solving polynomial equations, focusing on how extending the field of coefficients affects the symmetries of roots. Discover the crucial correspondence between descending chains of symmetry groups and increasing chains of coefficient fields. Understand the key that allowed Galois to determine which equations were solvable by radicals and explain Ruffini and Abel's result on the insolvability of the general quintic equation. Gain a deeper appreciation for the mathematical breakthroughs that revolutionized our understanding of polynomial equations and their solutions.

Galois theory II | Math History | NJ Wildberger