Algebraic geometry

Hopf Spaces

New Developments in Differential Equations

Volterra Stieltjes-Integral Equations

Localization of Nilpotent Groups and Spaces

Spectral Theory and Asymptotics of Differential Equations

Infinite Dimensional Holomorphy and Applications

Analytic Functions and Manifolds in Infinite Dimensional Spaces

Locally Compact Semi-Algebras

Holomorphic Functions, Domains of Holomorphy and Local Properties

Vectors in 2 or 3 Dimensions provides an introduction to vectors from their very basics.

As the basis of equations (and therefore problem-solving), linear algebra is the most widely taught sub-division of pure mathematics.