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Equation 75 · Part 1 · The Atlas That Refuses to Close

Symbol hatmathbf x

x^\hat{\mathbf x}
x^\hat{\mathbf x}

What this part means

hatmathbf x 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

hatmathbf x 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

…canonical transformation is what removes it, by transforming to exactly the representation in which the position operator is the Newton–Wigner operator and the oscillating term is absorbed into the difference between x^\hat{\mathbf x} and XNW\mathbf X_{\mathrm{NW}} [ 3 ] .

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Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

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Sources cited in the surrounding passage

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