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Erdős problem 486

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For each n∈Nn \in \mathbb{N} choose some Xn⊆Z/nZX_n \subseteq \mathbb{Z}/n\mathbb{Z}. Let B={m∈N:∀n,m≢x(modn) for all x∈Xn}B = \{m \in \mathbb{N} : \forall n, m \not\equiv x \pmod{n} \text{ for all } x \in X_n\}. Must BB have a logarithmic density?

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  1. Sourceerdos-problems
  2. StatementRetained
  3. Formal1 retained
  4. ResolutionNone filed
  5. WorkNone recorded
  6. DecisionNone here
  7. The questionNot reached
What this record is missingResolution

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Where the source files it576 share a topic
Number Theory576Primitive Sets9
Erdős problem 321accepted
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