IBM patented Euler's 200 year old math technique by repackaging a well-established mathematical concept of generalized continued fractions with new, flashy branding like "CoFrNets" and "ladders."
They implement this in PyTorch, using the reciprocal as a nonlinearity, and achieve mediocre results (61% accuracy on a simple dataset).
https://leetarxiv.substack.com/p/ibm-patented-eulers-fractions