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U

U - Variable in class org.flag4j.linalg.decompositions.schur.Schur
For storing the unitary U matrix in the Schur decomposition.
U - Variable in class org.flag4j.linalg.decompositions.svd.SVD
The unitary matrix U corresponding to M=USVH in the SVD.
unbox(Double[]) - Static method in class org.flag4j.util.ArrayUtils
Converts an array of Double objects to a primitive array (i.e.
unbox(Integer[]) - Static method in class org.flag4j.util.ArrayUtils
Converts an array of Integer objects to a primitive array (i.e.
unboxFlatten(Double[][]) - Static method in class org.flag4j.util.ArrayUtils
Flattens a two-dimensional array and unboxes.
uniqueSorted(int[]) - Static method in class org.flag4j.util.ArrayUtils
Gets the unique values from an array and sorts them.
UnitaryDecomposition<T,U> - Class in org.flag4j.linalg.decompositions.unitary
This class is the base class for all decompositions which proceed by using unitary transformations (specifically Householder reflectors) to bring a matrix into an upper triangular matrix or an upper Hessenburg matrix.
UnitaryDecomposition(int, boolean) - Constructor for class org.flag4j.linalg.decompositions.unitary.UnitaryDecomposition
Creates a real unitary decomposer which will reduce the matrix to an upper quasi-triangular matrix (Either truly upper or upper Hessenburg).
unwrap(double[], int[]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
unwrap(double[], int[][]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
unwrap(double[], int[], int[]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
unwrap(T[], int[]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
unwrap(T[], int[][]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
unwrap(T[], int[], int[]) - Method in class org.flag4j.operations.sparse.coo.SparseDataWrapper
Unwraps sparse data values and indices.
updateData(int) - Method in class org.flag4j.linalg.decompositions.hess.SymmHess
Updates the UnitaryDecomposition.transformMatrix matrix using the computed Householder vector from RealUnitaryDecomposition.computeHouseholder(int).
updateData(int) - Method in class org.flag4j.linalg.decompositions.unitary.ComplexUnitaryDecomposition
Updates the UnitaryDecomposition.transformMatrix matrix using the computed Householder vector from ComplexUnitaryDecomposition.computeHouseholder(int).
updateData(int) - Method in class org.flag4j.linalg.decompositions.unitary.RealUnitaryDecomposition
Updates the UnitaryDecomposition.transformMatrix matrix using the computed Householder vector from RealUnitaryDecomposition.computeHouseholder(int).
updateData(int) - Method in class org.flag4j.linalg.decompositions.unitary.UnitaryDecomposition
Updates the UnitaryDecomposition.transformMatrix matrix using the computed Householder vector from UnitaryDecomposition.computeHouseholder(int).
useCentering() - Static method in class org.flag4j.io.PrintOptions
Gets the centering flag.
useConcurrent(int) - Static method in class org.flag4j.operations.dense.real_complex.RealComplexDenseElemDiv
Chooses if a concurrent algorithm for element-wise multiplication should be used based on the shape of the two tensors.
UTILITY_CLASS_ERR - Static variable in class org.flag4j.util.ErrorMessages
Error message for attempted instantiation of a utility class.
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