This symbol represents a state of the dynamical system at some time point.
This symbol represents a state of the dynamical system at some time point. It is a complete characterization of the system at that time point.
The symbol \( \mathbf{x} \) represents a state of the dynamical system at some observation time. This is an element of the state space \( \htmlClass{sdt-0000000038}{\mathcal{X}} \) and is a complete characterization of the system at that time point.