Erdős Problem #1119 — Families of Entire Functions with Few Pointwise Values

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Let m\mathfrak m be a cardinal satisfying ℵ0<m<c\aleph_0<\mathfrak m<\mathfrak c, where c=2ℵ0\mathfrak c=2^{\aleph_0}. Suppose FF is a family of entire functions f:C→Cf:\mathbb C\to\mathbb C such that, for every z0∈Cz_0\in\mathbb C, the set {f(z0):f∈F}\{f(z_0):f\in F\} has cardinality at most m\mathfrak m. Must FF itself have cardinality at most m\mathfrak m?

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