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Unitary

A unitary operator U satisfies

U^|U=1
(1)
UU^|=1,
(2)

where U^| is the adjoint operator.

See also

Antiunitary, Koopman Operator, Unitary Transformation

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References

Sakurai, J. J. Modern Quantum Mechanics. Menlo Park, CA: Benjamin/Cummings, 1985.

Referenced on Wolfram|Alpha

Unitary

Cite this as:

Weisstein, Eric W. "Unitary." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Unitary.html

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