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Equation 62 · Part 2 · A Reference Frame Becomes Classical by Publishing Its Orientation

Symbol hat g

hg^h\hat g
g^\hat g

What this part means

hat g 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

hat g 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

The central mathematical test is simple to state. Apply a common frame transformation h to the physical description. Covariance sends g and g^\hat g to hg and hg^\hat g , or to the appropriate left/right action fixed by convention. A left-invariant distance satisfies

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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 article section

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