torch.Tensor.add
Tensor.add(other, *, alpha=1) -> Tensor
Add a scalar or tensor to "self" tensor. If both "alpha" and
   "other" are specified, each element of "other" is scaled by "alpha"
   before being used.
When "other" is a tensor, the shape of "other" must be
   broadcastable with the shape of the underlying tensor
See "torch.add()"