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Equation 50 · Part 1 · Every Crystal Has Its Own Speed of Light

Symbol zeta

ζ>1\zeta > 1
ζ\zeta

What this part means

zeta 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

zeta 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

The first verdict is a genuine win for the theory. Every exponent measured is super-linear — ζ\zeta > 1 at seven of the eight points — exactly where the long-range bound says a finite-velocity linear cone is not guaranteed and faster-than-linear growth is required instead, and the propagation outright violates the nearest-neighbour bound vLRv_{\mathrm{LR}} = 12eJmax⁡J_{\max} once α\alpha drops below…

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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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Sources cited in the surrounding passage

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