We present a pde-based framework that generalizes Group equivariant
Convolutional Neural Networks (G-CNNs). In this framework, a network layer is
seen as a set of PDE-solvers where geometrically meaningful PDE-coefficients
become the layer's trainable weights. Formulating our PDEs on h
PDE-CNNs, a variant of PDE-based Group Convolutional Neural Networks, offer fewer parameters, better performance, and data efficiency compared to CNNs, while utilizing semifield-valued signals for geometric interpretability.