Elementary Algebra with Applications  
Free pdf book Elementary Algebra with Applications is a begining level text designed specifically for students who have not had a previous course in algebra. The book can be used in lecturediscussion classes. 
Geometry & Topology Monographs  
The aim is to provide an introduction to higher local fields (more generally complete discrete valuation fields with arbitrary residue field) and render the main ideas of this theory (Part I), as well as to discuss several applications and connections to other areas. 
The Calculus Bible  
The Calculus Bible by G.S. Gill can be downloaded in pdf format free of charge. 
Tensor Calculus and Continuum Mechanics  
This free book covers topics like tensors, differential geometry, relativity, continuum mechanics, quaternions, multvectors and Clifford algebra. 
Introduction to Matrix Algebra  
This free book is written primarily for students who are at freshman level or do not take a full 3credit hour course in Linear/Matrix Algebra, or are wanting a contemporary and applied approach to Matrix Algebra. 
