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HandWiki. Operator. Encyclopedia. Available online: https://encyclopedia.pub/entry/36197 (accessed on 04 October 2026).
HandWiki. Operator. Encyclopedia. Available at: https://encyclopedia.pub/entry/36197. Accessed October 04, 2026.
HandWiki. "Operator" Encyclopedia, https://encyclopedia.pub/entry/36197 (accessed October 04, 2026).
HandWiki. (2022, November 24). Operator. In Encyclopedia. https://encyclopedia.pub/entry/36197
HandWiki. "Operator." Encyclopedia. Web. 24 November, 2022.
Operator
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The content is sourced from: https://handwiki.org/wiki/Physics:Operator

In physics, an operator is a function over a space of physical states onto another space of physical states. The simplest example of the utility of operators is the study of symmetry (which makes the concept of a group useful in this context). Because of this, they are very useful tools in classical mechanics. Operators are even more important in quantum mechanics, where they form an intrinsic part of the formulation of the theory.

symmetry operator utility

References

  1. Molecular Quantum Mechanics Parts I and II: An Introduction to Quantum Chemistry (Volume 1), P.W. Atkins, Oxford University Press, 1977, ISBN:0-19-855129-0
  2. Ballentine, L. E. (1970), "The Statistical Interpretation of Quantum Mechanics", Reviews of Modern Physics 42 (4): 358–381, doi:10.1103/RevModPhys.42.358, Bibcode: 1970RvMP...42..358B  https://dx.doi.org/10.1103%2FRevModPhys.42.358
  3. Quantum Mechanics Demystified, D. McMahon, Mc Graw Hill (USA), 2006, ISBN:0-07-145546-9
  4. Quanta: A handbook of concepts, P.W. Atkins, Oxford University Press, 1974, ISBN:0-19-855493-1
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