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Equation 45 · Part 2 · A Horizon Is a Toll Booth, Not a Loophole

Symbol Gamma

N⊥[Γ]N_\perp[\Gamma]
Γ\Gamma

What this part means

Gamma 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

Gamma 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

That second identity is the entire resolution in miniature, and it is worth deriving N⊥N_\perp[Γ\Gamma] both ways to see it operate. Hold the local energy budget fixed at ElocE_{\rm loc}=E0E_0' (a battery physically at the processor, delivering a fixed amount of locally measured energy) over a proper interval Δ\Deltaτ\tau :

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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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