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Equation 75 · Part 7 · No Particle Without a Cosigner

subscript

∫0∞x(ex−1)−1dx=π2/6\int_0^\infty x(e^x-1)^{-1}dx=\pi^2/6
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.

The passage around this formula

Write the normalized accelerated spectrum in terms of the dimensionless ratio u ≡\equiv cΩ\Omega/a , using the exact Bose-Einstein shape derived above. Carrying out the normalization integral, ∫0∞\int_0^\infty Ω\Omega\,(e2πcΩ/ae^{2\pi c\Omega/a}-1)^{-1}\,dΩ\Omega = a2a^2/(24c2c^2) , using the standard result ∫0∞\int_0^\infty x(exe^x-1)^{-1}dx=π2\pi^2/6 , gives the scale-family form

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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 →

Sources cited in the article section

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