Linear algebra classes

Collaboration diagram for Linear algebra classes:

Modules
	Linear Operators
	Matrix classes
	PETScWrappers
	Preconditioners and Relaxation Operators
	SLEPcWrappers
	Linear solver classes
	Sparsity patterns
	TrilinosWrappers
	Vector memory management
	Vector classes

Detailed Description

This group contains classes that involve linear algebra, i.e., those associated with matrices, vectors, and the solution of linear systems.

The description of individual groups of classes can be found in sub-topics.

The header generic_linear_algebra.h provides aliases for commonly used types in LinearAlgebraDealII, LinearAlgebraPETSc, and LinearAlgebraTrilinos. The latter two namespaces are available when the corresponding external library is enabled. LinearAlgebraDealII provides serial types, while the MPI subnamespaces of LinearAlgebraPETSc and LinearAlgebraTrilinos provide distributed vector and matrix types. The aliases retain each backend's initialization, communication, and solver options; applications choose the namespace appropriate to their problem.

The files implementing linear algebra functionality are in the lac subdirectory, an abbreviation for Linear Algebra Classes.