Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

NSpectra
CDavidsonSymEigsSolver
CDenseCholesky
CDenseGenComplexShiftSolve
CDenseGenMatProd
CDenseGenRealShiftSolve
CDenseHermMatProd
CDenseSymMatProd
CDenseSymShiftSolve
CGenEigsBase
CGenEigsComplexShiftSolver
CGenEigsRealShiftSolver
CGenEigsSolver
CHermEigsBase
CHermEigsSolver
CJDSymEigsBase
CRestartArnoldi
CRestartArnoldi< std::complex< RealScalar >, ArnoldiFac >
CSparseCholesky
CSparseGenComplexShiftSolve
CSparseGenMatProd
CSparseGenRealShiftSolve
CSparseHermMatProd
CSparseRegularInverse
CSparseSymMatProd
CSparseSymShiftSolve
CSymEigsShiftSolver
CSymEigsSolver
CSymGEigsShiftSolver
CSymGEigsShiftSolver< OpType, BOpType, GEigsMode::Buckling >
CSymGEigsShiftSolver< OpType, BOpType, GEigsMode::Cayley >
CSymGEigsShiftSolver< OpType, BOpType, GEigsMode::ShiftInvert >
CSymGEigsSolver
CSymGEigsSolver< OpType, BOpType, GEigsMode::Cholesky >
CSymGEigsSolver< OpType, BOpType, GEigsMode::RegularInverse >
CSymShiftInvert