Are you talking about something like this? https://en.wikipedia.org/wiki/Kolmogorov%E2%80%93Arnold_representation_theorem https://en.wikipedia.org/wiki/Kolmogo

Are you talking about something like this? https://en.wikipedia.org/wiki/Kolmogorov%E2%80%93Arnold_representation_theorem https://en.wikipedia.org/wiki/Kolmogorov%E2%80%93Arnold_repr...