' These are functions of two tensors with common properties like: - they are elementwise functions - the output shape is determined by the input shape - they typically have method and inplace variants - they typically support the out kwarg - they typically have NumPy or SciPy references See NumPy's universal function documentation (https://numpy.org/doc/stable/reference/ufuncs.html) for more details about the concept of ufuncs. NFT) r¤