^^Gruppo algebrico. Links.
Open knowledge
 open textbooks approved by American Institute of Mathematics
https://aimath.org/textbooks/approvedtextbooks/
es:
Books Using Sage
 Free Open Source and Open
Content Educational Materials
http://iaepedia.org/Open_Source_Textbooks
Open books and courses
 Math 4120
(Modern Algebra), Summer I 2020 (online), by Matthew Macauley
http://www.math.clemson.edu/~macaule/classes/m20_math4120/

An inquirybased approach to abstract algebra, by
Dana Ernst.
 Abstract Algebra: Theory and Applications. by Tom Judson.
http://abstract.ups.edu/
Rob Beezer has contributed
complementary material using the open source system,
Sage.

http://homepage.divms.uiowa.edu/~goodman/algebrabook.dir/download.htm
Algebra: Abstract and Concrete
Blog
Azioni di un gruppo di
Gowers
Galois theory
 nrich/An Introduction to Galois Theory
 How do I Solve this Equation? Look at the Symmetries! – The Idea behind Galois Theory

Galois Theory for Beginners.pdf
Storia
Development_group_theory.html