These notes attempt to give an introduction to some basic aspects of Field Theory and Galois
Theory. Originally, the succeeding sections of these notes constituted a part of the notes
prepared to supplement the lectures of the author on Galois Theory and Ramification Theory
at the All India Summer School in Number Theory held at Pune in June 1991. Subsequently,
the first 6 sections of the Pune Notes were separated and slightly revised to form these “Notes
on Galois Theory”, which were used for pre-conference distribution to the participants of the
NBHM sponsored Instructional School on Algebraic Number Theory (University of Bombay,
December 1994) at the request of the organisers. A few minor revisions have taken place in
the subsequent years