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Equation 78 · Part 1 · A Reference Frame Becomes Classical by Publishing Its Orientation

Symbol σ^(n)

σ(n)\boldsymbol\sigma^{(n)}
σ(n)\sigma^{(n)}

What this part means

σ^(n) is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

σ^(n) is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

Let J\mathbf J be the spin- j angular-momentum operator and σ(n)\boldsymbol\sigma^{(n)} the Pauli vector for probe n . A candidate rotationally invariant interaction is

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Learn the underlying idea

An exponent tells how a base is used in multiplication. In x³, x is the base and 3 is the exponent: x³ = x × x × x.

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