93Bxx Controllability, observability, and system structure

• 93B03 Attainable sets
• 93B05 Controllability
• 93B06 Relations between controllability and optimal solutions
• 93B07 Observability
• 93B10 Canonical structure
• 93B11 System structure simplification
• 93B12 Variable structure systems
• 93B15 Realizability of systems from input-output data
• 93B17 Transformation
• 93B18 Linearizability
• 93B20 Minimal systems representations
• 93B25 Algebraic methods
• 93B27 Geometric methods (including algebro-geometric)
• 93B28 Operator-theoretic methods, See also {47A57, 47N70}
• 93B29 Differential-geometric methods
• 93B30 System identification
• 93B35 Sensitivity (robustness)
• 93B36 ${H}^ \infty$-control
• 93B40 Computational methods
• 93B50 Synthesis problems
• 93B51 Design techniques (robust design, computer-aided design, etc.)
• 93B52 Feedback control
• 93B55 Pole and zero placement problems
• 93B60 Eigenvalue problems
• 93B99 None of the above but in this section