Matrices. Classical Matrices. Triangles and Banach Consistency. FK Spaces. Replaceability and Consistency. Bigness Theorems. Sequence Spaces. Inclusion and Mapping. Semiconservative Spaces and Matrices. Distinguished Subspaces of FK Spaces. Extension. Distinguished Subspaces of Matrix Domains. Distinguished Subspaces of c/A. The Functional .... The Subspace P. Sequential Completeness and Separability. Maps of Banach Spaces. Algebra. Miscellany. Bibliography. Index.