Definitions and basic properties of groups, order, subgroups, Lagrange theorem, normal subgroups, quotient group.
Group presentation with generators and relations, free groups.
Cyclic groups. Dihedral groups, permutation groups. Decomposition of a permutation into cycles. Conjugate subgroups, conjugacy classes of group elements, conjugacies of the symmetric group.
Isomorphism theorems, Cayley’s theorem.
Quotient groups, product of groups, group extensions.
Classification of finitely generated abelian groups.
Group actions, orbit counting, Cauchy’s theorem
Sylow’s theorems.
Normal, solvable and nilpotent groups.
Bibliography
M. Armstrong. Groups and Symmetry. Springer, 1988.