# Matrices and Linear Algebra

MatricesCreating matrices over rings and fields.

[Matrices](Matrices/index-matrices.md)Sparse MatricesSparse matrix creation, access and entries.

[Sparse Matrices](SparseMatrices/index-sparse-matrices.md)Vector SpacesBases, subspaces, quotients and inner products.

[Vector Spaces](VectorSpaces/index-vector-spaces.md)Polar SpacesReflexive sesquilinear and quadratic forms, and polar space structure.

[Polar Spaces](PolarSpaces/index-polar-spaces.md)