Graph Theory with Applications  
Topics covered in this free online math book include: Graphs and Subgraphs, Trees, Connectivity, Euler Tours and Hamilton Cycles, Matchings, Edge Colourings, Independent Sets and Cliques and etc. 
Abstract Algebra: The Basic Graduate Year  
This is a studentoriented text covering the standard first year graduate course in algebra. Solutions to all problems are included and some of the reasoning is informal. 
A Course In Algebraic Number Theory  
This is an introduction to the subject, covering both global and local fields. The prerequisite is a standard graduate course in algebra. 
A Course In Commutative Algebra  
Commutative algebra is the theoretical foundation of algebraic geometry and algebraic number theory. Assuming as prerequisite a standard graduate algebra course, we attempt to reach an advanced level quickly and efficiently. 
Complex Variables  
This is a studentoriented text covering the standard first year graduate course in complex variables. Solutions to all problems are included. 
