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Equation 73 · Part 1 · The Entry a Relabeling Cannot Write

Symbol Δ E_Lambda

ΔEΛ(ρ)\Delta E_\Lambda(\rho)
ΔEΛ\Delta E_\Lambda

What this part means

Δ ELE_Lambda 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

Δ ELE_Lambda 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

…with non-negligible system-bath correlations, and the resolution adopted there is the one adopted here: report the total defect exactly, and do not pretend to resolve an assignment the formalism does not support [ 13 ] . Δ\Delta EΛ(ρ)E_\Lambda(\rho) answers “how much” without overreaching into “belonging to which part,” and that restraint is a feature of the construction, not a gap in it.

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Learn the underlying idea

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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