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"""A module to manipulate symbolic objects with indices including tensors

"""
from .indexed import IndexedBase, Idx, Indexed
from .index_methods import get_contraction_structure, get_indices
from .array import (MutableDenseNDimArray, ImmutableDenseNDimArray,
    MutableSparseNDimArray, ImmutableSparseNDimArray, NDimArray, tensorproduct,
    tensorcontraction, derive_by_array, permutedims, Array, DenseNDimArray,
    SparseNDimArray,)

__all__ = [
    'IndexedBase', 'Idx', 'Indexed',

    'get_contraction_structure', 'get_indices',

    'MutableDenseNDimArray', 'ImmutableDenseNDimArray',
    'MutableSparseNDimArray', 'ImmutableSparseNDimArray', 'NDimArray',
    'tensorproduct', 'tensorcontraction', 'derive_by_array', 'permutedims',
    'Array', 'DenseNDimArray', 'SparseNDimArray',
]