80 Probability and Statistics
81.1 Probability. Hazards
81.2 Combinatorial analysis
See also: 46 Graph theory
82 Stochastic processes. Markov chains. Theory of queues. Stochastic geometry. Limit theorems. Random walks
83 Statistics. Design of experiments. Errors. Observations
84 Statistical decision theory
85 Information theory (see also: 256). Coding. Systems and control theory
86 Operations research. Mathematical optimization techniques. Optimal control
87 Game theory
88 Actuarial mathematics