Equation 54 · Part 2 · How Fast Can a Horizon Learn Which Path You Took?

subscript

D_{\rm irr}

subscript

What this part means

The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.

Its job in the formula

A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.

Full expressionsubscriptArticle meaning

The passage around this formula

The program first reproduces published overlap or decoherence curves inside their stated regimes. Only then does it calculate D , $p_{\rm e}$ , $\chi_H$ , $I_{\rm dec}$ , and threshold times. A separate finite-time module approximates the admissible-future optimization needed for $D_{\rm irr}$ . Its result is labeled exploratory until it reproduces benchmark purification cases from the 2025 work.

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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.

Open the illustrated subscripts: which member of a family? guide →

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