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Galtonwatson Extinction Universality 79
universality CV=0.27321 [0.27236, 0.27406], with 99.45% of valid files below the 0.30 threshold; in the embedded Poisson condition summaries, mean extinction time rises from 2.94 [2.93, 2.94] at mu=0.80 to 18.70 [18.24, 19.17] at mu=1.00, while skewness rises from 3.09 [3.07, 3.12] to 27.37 [26.80, 27.94].
CONFIRMED. The family-level collapse metric stays below the preset threshold, with universality CV 0.27321 and 99.45% of valid files below 0.30. That is strong evidence that the rescaled extinction-time distributions are broadly universal across the sampled offspring laws. At the same time, the embedded Poisson summaries show the expected near-critical tail growth, with mean extinction time rising from 2.94 at mu=0.80 to 18.70 at mu=1.00 and skewness rising from 3.09 to 27.37. The supported claim is therefore universality in bulk spread after rescaling, not identity of all higher-moment tail details arbitrarily close to criticality.
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