Lang's algebra (revised 3rd edition) contains a chapter on general homology theory, with a section on spectral sequences. Thus, we can use this book at least as an outline for the algebraic part of the project.
###To Do:
- R-modules, vector spaces,
- some basic theory: product, tensor, hom, projective,
- categories of algebras, abelian categories,
###Already Done:
- definition of algebraic structures such as groups, rings, fields,
