Lecture 16. Cardano Formulas

0:00 "Artis Magnae" book by Cardano, 1545
0:54 Lagrange resolvent
6:40 Cubic equations
20:06 Quartic equations

In this lecture we use Galois theory to derive Cardano formulas for the roots of polynomial equations of degrees 3 and 4.
This is a lecture in a graduate course "Groups and Galois Theory".

Here is the complete playlist for this course:

[nordineramdane]

Thanks for this brillant vidéo. I tried to compute r^1 (10)*r^2(10) but with no sucess cant find your result

[nordineramdane]

Ok will review my calculations but as you said it is very technical and not the best part