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Abstract Algebra

The topics that will be covered under Abstract Algebra are as follows: Group Theory, Ring Theory, Field Theory, etc.

The notes on Group Theory are designed here in such a way that it covers a complete course in Group Theory.

Group Theory: Table of Contents
  • Introduction to Group Theory
  • Semigroup
  • Order of a Group
  • Order of a Permutation
  • Abelian Group
  • Cyclic Group
  • Subgroups of Cyclic Groups
  • Group of Prime Order
  • Center of a Group
  • Orbit Stabilizer Theorem
  • Left Coset & Right Coset
  • Quotient Group
  • Normal Subgroup
  • Normalizer of a Group
  • Simple Group
  • Conjugacy Relation
  • Group Homomorphism
  • Kernel of a Group Homomorphism
  • Group Isomorphism
  • First Isomorphism Theorem
  • Second Isomorphism Theorem
  • Third Isomorphism Theorem

Prove that Order of Element Divides Order of Group

Group of Order 4 is Abelian: Proof

Center of Symmetric Group Sn is Trivial

Prove that Symmetric Group Sn is not Abelian

Every Subgroup of a Cyclic Group is Cyclic: Proof

Two Cyclic Groups of Same Order are Isomorphic

Infinite Cyclic Group is Isomorphic to ℤ [With Generators]

Ring Theory: Table of Contents
  • Introduction to Ring Theory
  • Units of a Ring
  • Characteristic of a Ring
  • Zero Divisors in a Ring
  • Idempotent and Nilpotent Element of a Ring
  • Integral Domain
  • ℤn is an Integral Domain iff n is Prime
  • Every Finite Integral Domain is a Field
  • Maximal Ideal
Field Theory: Table of Contents
  • An Introduction to Field Theory
  • A Field is an Integral Domain
  • Characteristic of a Field
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