Man pages for eigencore
Certified Partial Eigenvalue and Singular Value Computation

adjointReturn the adjoint operator.
alpha_betaExtract homogeneous generalized coordinates.
as_operatorConvert an object to an eigencore operator.
autoAutomatic solver choice.
backward_errorExtract backward-error diagnostics.
benchmark_eigen_methodsBenchmark eigen methods against base and optional references.
benchmark_svd_methodsBenchmark SVD methods against base and optional references.
b_orthogonalizeOrthogonalize columns in the B-inner product.
both_endsTarget both algebraic ends.
centerCenter an operator by rows or columns.
certificateExtract a result certificate.
check_adjointCheck an operator adjoint identity.
cholqr2Cholesky QR with a corrective second pass.
composeCompose two operators.
crossprod_operatorCreate A^* A as an operator.
diagnosticsExtract diagnostics.
eigencore-packageeigencore
eigen_problemDefine an eigenproblem.
eig_fullCompute a full dense eigendecomposition
eig_partialCompute a partial eigendecomposition.
eigsRSpectra-compatible eigen shim.
eigs_symRSpectra-compatible symmetric eigen shim.
euclideanEuclidean vector space descriptor.
generalGeneral operator structure descriptor.
generalized_schurCompute a dense generalized Schur decomposition
generalized_svdCompute a dense generalized singular value decomposition
golub_kahanGolub-Kahan bidiagonalization method descriptor.
hermitianHermitian/symmetric operator structure descriptor.
lanczosHermitian Lanczos method descriptor.
largestTarget the largest algebraic values.
largest_imaginaryTarget the largest imaginary part.
largest_magnitudeTarget the largest values by magnitude.
largest_realTarget the largest real part.
left_vectorsExtract left singular vectors or left eigenvectors.
linear_operatorCreate a block-native linear operator.
lobpcgLOBPCG method descriptor.
mgs2Modified Gram-Schmidt with two passes.
nearestTarget values nearest a shift.
operator_scaleMultiply an operator by a scalar.
operator_sumSum compatible operators.
orthogonality_lossMeasure orthogonality loss.
plan_solverPlan a solver for a problem.
randomizedRandomized SVD method descriptor.
rayleigh_ritzRayleigh-Ritz projection in a trial basis.
residualsExtract residual diagnostics.
right_vectorsExtract right singular vectors.
scale_colsScale operator columns.
scale_rowsScale operator rows.
shifted_cholesky_preconditionerShifted Cholesky preconditioner.
shifted_diagonal_preconditionerShifted diagonal preconditioner.
shifted_tridiagonal_preconditionerShifted tridiagonal preconditioner.
shift_invertShift-invert method descriptor.
smallestTarget the smallest algebraic values.
smallest_imaginaryTarget the smallest imaginary part.
smallest_magnitudeTarget the smallest values by magnitude.
smallest_realTarget the smallest real part.
solve.eigencore_eigen_problemSolve a planned eigenproblem.
solve.eigencore_svd_problemSolve a planned SVD problem.
svd_partialCompute a partial singular-value decomposition.
svd_problemDefine an SVD problem.
svdsRSpectra-compatible SVD shim.
symmetric_operatorMark an operator as symmetric/Hermitian.
validate_eigen_accuracyValidate eigencore eigen results against a dense oracle.
validate_svd_accuracyValidate eigencore SVD results against base::svd().
valuesExtract computed values.
vectorsExtract eigenvectors.
eigencore documentation built on July 26, 2026, 1:06 a.m.