## The Concept of "State" in System Theory

• In system theory, state is a key concept. Here, the word state refers to condition, as in the example Since he went into the hospital, his state of health worsened daily. This colloquial meaning was the starting point for defining the concept of state in system theory. System theory describes the relationship between input X and output Y, that is, between influence and reaction. In system theory, a system is something that shows an observable behavior that may be influenced. Therefore, apart from the system, there must be something else influencing and observing the reaction of the system. This is called the environment of the system.

Author: Siegfried Wendt urn:nbn:de:hbz:386-kluedo-173 Preprint English 1998 1998 Technische Universität Kaiserslautern 2000/02/09 Fachbereich Elektrotechnik und Informationstechnik 6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten Standard gemäß KLUEDO-Leitlinien vor dem 27.05.2011

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