SliceDistribution
SliceDistribution[proc, t] represents the distribution of the process state at time t.
SliceDistribution[proc, {t1, ..., tk}]represents the joint distribution of process states at times t1 < ... < tk.
Examples
Distribution at a specific time:
proc = WienerProcess[];
SliceDistribution[proc, 1]Joint distribution at multiple times:
SliceDistribution[proc, {1, 2, 3}]Sample from slice distribution:
RandomVariate[SliceDistribution[WienerProcess[], 2], 10]Please visit the official Wolfram Language Reference for more details.