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SyTen
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SyTen
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Matrix operations for smart tensors. More...
Include dependency graph for stensor_matrixop.h: This graph shows which files directly or indirectly include this file:Namespaces | |
| namespace | syten |
| Syten namespace. | |
| namespace | syten::STensorImpl |
| Contains all ‘smart’ tensor related classes and functions. | |
Functions | |
| SRDef | syten::STensorImpl::avgAbs (STensor const &in) |
| Forward overload. More... | |
| std::tuple< STensor, std::array< SBasis, 2 > > | syten::STensorImpl::commutator (STensorProxy A, STensorProxy B, ConstSpan< SBasis > const &AIds, ConstSpan< SBasis > const &BIds) |
| Calculates the commutation of tensors A and B with respect to the requested legs, i.e. More... | |
| Vec< SDef > | syten::STensorImpl::diagonal (STensor const &in, bool const order=true) |
| Returns the diagonal entries of the rank-2 input tensor. More... | |
| void | syten::STensorImpl::diagonal_signs_to_largest (STensor &in) |
| Finds the diagonal element with the largest amplitude and sets every element whose real part does not have the same sign as this element to zero. More... | |
| STensor | syten::STensorImpl::exp (STensor in, SBasisId const &rightLeg, SDef scalar=1., bool const exact=true, bool const b=false) |
| Overload which also needs to know the right leg (i.e the one first applied to the state) of the matrix, because this information is needed for the AD. More... | |
| STensor | syten::STensorImpl::exp (STensor in, SDef scalar=1.) |
| Takes the exponential of a hermitian rank-2 tensor multiplied by a scalar prefactor by direct exponentiation after mapping it to matrix form (outgoing leg first, incoming leg second in fermionic order). More... | |
| STensor | syten::STensorImpl::ferm_trace (STensor const &in) |
| Computes the fermionic trace of the given tensor, i.e. More... | |
| STensor | syten::STensorImpl::hadamard (STensor const &a, STensor b) |
| Takes the Hadamard product of two rank-2 tensors. More... | |
| STensor | syten::STensorImpl::hadamard_inv_diffdiff (STensor const &s, STensor x, SBasisId const &j_basis, SBasisId const &i_basis, bool minus) |
Given a diagonal square tensor s and a square tensor x, approximates \( x_i^j \left( \frac{1}{s_j - s_i} \pm \frac{1}{s_j + s_i} \right) \). More... | |
| STensor | syten::STensorImpl::herm_to_symmetrise (STensor in) |
| Takes the hermitian conjugate and adapts the bases such that addition with the input tensor results in a symmetric tensor. More... | |
| STensor | syten::STensorImpl::hermitize_by_copy (STensor in, SBasisId row_id, SBasisId col_id) |
| Hermitizes the input tensor by copying the elements from the upper triangular part complex-conjugated to the lower triangular part. More... | |
| STensor | syten::STensorImpl::invert_diagonal (STensor in) |
| Inverts the diagonal entries of the rank-2 input tensor. More... | |
| STensor | syten::STensorImpl::log (STensor in) |
| Takes the natural logarithm of a rank 0 STensor. More... | |
| STensor | syten::STensorImpl::log2 (STensor in) |
| Takes the 2 logarithm of a rank 0 STensor. More... | |
| std::tuple< SRDef, STensor > | syten::STensorImpl::pseudo_invert (STensor const &in) |
| Inverts the tensor using a SVD and returns the condition number of the result, which is obtained as the ratio of the largest and smallest inverted singular value. More... | |
| STensor | syten::STensorImpl::sqrt (STensor in) |
| Takes the square root of a diagonal rank-2 or rank-0 tensor after mapping it to matrix form (outgoing leg first, incoming leg second in fermionic order). More... | |
| STensor | syten::STensorImpl::trace (STensor const &in) |
| Calculates the trace of a tensor. More... | |
Matrix operations for smart tensors.
1.9.4