Cumulative diffusion signal product mathematical notation

Cumulative diffusion signal product is a recurring research-paper notation family. Multiplies per-step signal-retention coefficients through time to summarize the total signal remaining at a diffusion step.

Cumulative diffusion signal product: Multiplies per-step signal-retention coefficients through time to summarize the total signal remaining at a diffusion step. Example: Combine every earlier noising step into one signal-retention coefficient.