Expand description
Contains the specific implementations of SingletonContractor and SingletonViewer that
represent the base-case ways to contract or simplify a single tensor.
All the structs here perform perform some combination of
permutation of the input axes (e.g. ijk->jki), diagonalization across repeated but
un-summed axes (e.g. ii->i),
and summation across axes not present in the output index list (e.g. ijk->j).
Structs§
- Diagonalization
- Returns the elements of the input tensor where all instances of the repeated indices are equal to one another. Optionally permutes the axes of the tensor as well.
- Diagonalization
AndSummation - Returns the elements of the input tensor where all instances of the repeated indices are equal to one another, optionally permuting the axes, and sums across indices that don’t appear in the output.
- Identity
- Returns a view or clone of the input tensor.
- Permutation
- Permutes the axes of the input tensor and returns a view or clones the elements.
- Permutation
AndSummation - Permutes the elements of the input tensor and sums across elements that don’t appear in the output.
- Summation
- Sums across the elements of the input tensor that don’t appear in the output tensor.