2: The state of Schrödinger's cat expressed in bra-ket notation. | Download Scientific Diagram
MathType - The bra-ket notation devised by Paul Dirac is used in #QuantumPhysics as a way to make linear algebra operations more expressive. Of course, it is nothing but a rewriting of
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Ket -- from Wolfram MathWorld
quantum mechanics - Expectation Value in Bra-ket notation - Physics Stack Exchange