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Equation 108 · Part 1 · The Bit Comes Back Before the Bearing

Symbol t_G

tG(δ)t_G(\delta)
tGt_G

What this part means

tGt_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

tGt_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

​ is not a slower recovery — it is a request for better precision than the compass itself possessed, which no observer, inside or outside any horizon, could ever meet. Within that ceiling, tG(δ)t_G(\delta) grows toward the hole’s full evaporation lifetime as δ\delta is tightened, which is a specific, checkable form of the “information remnant” Nakata, Wakakuwa, and Koashi found directly in their symmetry-constrained analysis of the Hayden-Preskill protocol: a residue that a purely logical decoder never has to wait for, because it was never entitled to it in the first place [ 8 ] .

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A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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Sources cited in the surrounding passage

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