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  2. State-space representation - Wikipedia

    en.wikipedia.org/wiki/State-space_representation

    In control engineering and system identification, a state-space representation is a mathematical model of a physical system that uses state variables to track how inputs shape system behavior over time through first-order differential equations or difference equations. These state variables change based on their current values and inputs, while ...

  3. State variable - Wikipedia

    en.wikipedia.org/wiki/State_variable

    In control engineering and other areas of science and engineering, state variables are used to represent the states of a general system. The set of possible combinations of state variable values is called the state space of the system. The equations relating the current state of a system to its most recent input and past states are called the ...

  4. File:Situation Analysis of.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Situation_Analysis_of.pdf

    This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

  5. File:FBI File 104-10125-10133, Martin Luther King Jr., A ...

    en.wikipedia.org/wiki/File:FBI_File_104-10125...

    English: FBI File 104-10125-10133 titled: Martin Luther King Jr., A Current Analysis.This document was originally classified as secret by the United States government with "total denial", which has since been declassified and released to the public in the 21st century.

  6. Subspace identification method - Wikipedia

    en.wikipedia.org/wiki/Subspace_identification_method

    In mathematics, specifically in control theory, subspace identification (SID) aims at identifying linear time invariant (LTI) state space models from input-output data. SID does not require that the user parametrizes the system matrices before solving a parametric optimization problem and, as a consequence, SID methods do not suffer from problems related to local minima that often lead to ...

  7. Observability - Wikipedia

    en.wikipedia.org/wiki/Observability

    Consider a physical system modeled in state-space representation. A system is said to be observable if, for every possible evolution of state and control vectors, the current state can be estimated using only the information from outputs (physically, this generally corresponds to information obtained by sensors). In other words, one can ...

  8. Quantum state space - Wikipedia

    en.wikipedia.org/wiki/Quantum_state_space

    In quantum mechanics a state space is a separable complex Hilbert space.The dimension of this Hilbert space depends on the system we choose to describe. [1] [2] The different states that could come out of any particular measurement form an orthonormal basis, so any state vector in the state space can be written as a linear combination of these basis vectors.

  9. State (functional analysis) - Wikipedia

    en.wikipedia.org/wiki/State_(functional_analysis)

    Thus the set of all states of M with the weak-* topology forms a compact Hausdorff space, known as the state space of M. In the C*-algebraic formulation of quantum mechanics, states in this previous sense correspond to physical states, i.e. mappings from physical observables (self-adjoint elements of the C*-algebra) to their expected ...