MathDB
O 27

Source:

May 25, 2007
analytic geometryalgorithmLaTeXnumber theoryrelatively prime

Problem Statement

Let pp and qq be relatively prime positive integers. A subset S⊆N0S\subseteq \mathbb{N}_0 is called ideal if 0∈S0 \in S and, for each element n∈Sn \in S, the integers n+pn+p and n+qn+q belong to SS. Determine the number of ideal subsets of N0\mathbb{N}_0.
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