Random Variable, Probability, Machine Learning, Signal Processing, Stochastic Process.
strict sense stationary process (SSS) if for all t₁, t₂, . . . , tₙ and any Δ, the following condition is satisfied: In general, it is very hard not impossible to prove if a process is SSS therefore we focus on weaker notation. Weak/Wide Sense Stationary (WSS) X(t) is a WSS process if for all t₁,