(** Signature for matrices built on the {!Basis.t} *) open Qcaml_gaussian_basis open Qcaml_linear_algebra type t = (Basis.t, Basis.t) Matrix.t val of_basis : Basis.t -> t (** Build from a {!Basis.t}. *) val of_basis_pair : Basis.t -> Basis.t -> t (** Build from a pair of {!Basis.t}. *) val to_file : filename:string -> t -> unit (** Write the integrals in a file. *)