Quantum Machine Learning
A 'bra' is a component of Dirac notation used in quantum mechanics to represent the dual vector associated with a quantum state. In this notation, the bra is written as ⟨ψ|, where ψ represents the quantum state, and it is used to denote linear functionals that act on kets, which are another part of Dirac notation. The relationship between bras and kets forms a foundational aspect of quantum states and their mathematical representation, playing a critical role in inner products and quantum measurements.
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