Structural Identifiability and Discrete Symmetries

Co-author(s): Xabier Rey Barreiro, Nick Baberuxki, Meskerem Abebaw Mebratie and Alejandro F. Villaverde

Reference: Proceedings of the European Control Conference 2026, Reykjavik (Iceland), accepted for publication

Description: In this short letter, we discuss the role of discrete symmetries for the structural identifiability and observability analysis of finite-dimensional control systems. We show how to compute discrete symmetries via the Thomas decomposition and argue that their existence distinguishes between local and global identifiability / observability. Some concrete examples are presented.

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