\mathbb{K}^{n \times k} that solves the system
  A^{\text{H}}X = B\mathrlap{\qquad A \in \mathbb{K}^{k \times k},
  B \in \mathbb{K}^{n \times k}.}

where A^{\text{H}} is the conjugate transpose when A is complex,
   and the transpose when A is real-valued. The "left"= False case
   is analogous.
Supports inputs of float, double, cfloat and cdouble dtypes. Also
   supports batches of matrices, and if the inputs are batches of
   matrices then the output has the same batch dimensions.
Parameters:
      * LU (Tensor) -- tensor of shape (, n, n) (or (, k,
        k) if "left"= True) where *** is zero or more batch
        dimensions as returned by "lu_factor()".
  * **pivots** (*Tensor*) -- tensor of shape *(*, n)* (or *(*, k)*
    if "left"*= True*) where *** is zero or more batch dimensions
    as returned by "lu_factor()".

  * **B** (*Tensor*) -- right-hand side tensor of shape *(*, n,
    k)*.

Keyword Arguments: