1. Rings and ideals: review of
ideals in quotient rings; prime and maximal ideals, prime ideals under
quotient,
existence of maximal ideals; operations on ideals (sum, product,
quotient and radical); Chinese Remainder theorem; nilradical and
Jacobson radical; extension and contraction of ideals
under ring homomorphisms; prime avoidance.
2. Free modules;
Projective Modules; Tensor Product of Modules and Algebras; Flat,
Faithfully Flat and Finitely Presented Modules;
Shanuels Lemma.
3. Localisation and local rings, universal
property of localisation, extended and contracted ideals and prime
ideals under localisation, localisation and quotients,
exacteness property. Results on prime ideals like theorems of Cohen and
Isaac. Nagatas criterion for UFD and applications; equivalence of PID
and one-dimensional UFD.
4. Modules
over local rings. Cayley-Hamilton, NAK lemma and applications. Examples
of local-global principles. Projective and locally free modules.
Patching up of Localisation.
5. Polynomial
and Power Series Rings. Noetherian Rings andModules. Hilberts Basis
Theorem. Associated Primes and Primary Decomposition. Artininan Modules.
Modules of Finite Length.
6. Integral
Extensions: integral closure, normalisation and normal rings.
Cohen-Seidenberg Going-Up Theorem. Hilberts Nullstellensatz and
applications.
7. Valuations, Discrete Valuation Rings,
Dedekind domains.
Suggested Texts :
1. N.S. Gopalakrishnan, Commutative Algebra, Oxonian Press (1984).
2. M.F. Atiyah and I.G. Macdonald, Introduction to
commutative algebra, Addision-Wesley (1969).
3. M. Reid: Undergraduate commutative algebra, LMS Student Texts (29), Cambridge Univ.Press (1995).
4. R.Y. Sharp: Steps in
commutative algebra, LMS Student Texts (19), Cambridge Univ. Press (1995).
5. E. Kunz: Introduction to commutative algebra and algebraic geometry, Birkhauser (1985).
6. D.S.
Dummit and R.M. Foote: Abstract Algebra (Part V), John Wiley (Asian reprint 2003).
7. D. Eisenbud: Commutative algebra with a view toward algebraic geometry GTM (150),
Springer-Verlag (1995).
8. F. Ischebeck and Ravi A. Rao, Ideals and Reality, Springer (2005).
- Teacher: Maneesh Thakur