Problem 517: An infinite-order Fabry series outside the Fejér class

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fabry_nonfejer_boundary: Explicit exponents and coefficients produce an entire function of infinite order with Fabry gaps and divergent reciprocal sum; its value distribution remains unresolved.

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The [[research/erdos_517/fabry_nonfejer_boundary|argument on an infinite-order fabry series outside the fejér class]] records its exact scope, source premises, and remaining gap toward [[problems/analysis/E0517/_index|Problem 517]].