More precisely, we prove that if $(\mathbb{Q\setminus}\mathbb{Z})$-$\mathcal{KS}(pq)=\emptyset$, then $\mathbb{Z}$-$\mathcal{KS}(pq)=\{ q+p-1\}$.
📌 3 Key Takeaways
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Objective & Hypothesis:For a positive integer $N$ and $\mathbb{A}$, a subset of $\mathbb{Q}$, let $\mathbb{A}$-$\mathcal{KS}(N)$ denote the set of $\alpha=\dfrac{\alpha_{1}}{\alpha_{2}}\in \mathbb{A\setminus} \{0,N\}$, where $\alpha_{2}r-\alpha_{1}$ divides $\alpha_{2}N-\alpha_{1}$ for every prime divisor $r$ of $N$.
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Key Findings & Data:In this paper, we prove that each $pq$-Korselt base in $\mathbb{Z\setminus}\{ q+p-1\}$ generates at least one other in $\mathbb{Q}$-$\mathcal{KS}(pq)$.
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Conclusion & Impact:More precisely, we prove that if $(\mathbb{Q\setminus}\mathbb{Z})$-$\mathcal{KS}(pq)=\emptyset$, then $\mathbb{Z}$-$\mathcal{KS}(pq)=\{ q+p-1\}$.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:prime number · Carmichael number · squarefree composite number
Abstract
For a positive integer $N$ and $\mathbb{A}$, a subset of $\mathbb{Q}$, let $\mathbb{A}$-$\mathcal{KS}(N)$ denote the set of $\alpha=\dfrac{\alpha_{1}}{\alpha_{2}}\in \mathbb{A\setminus} \{0,N\}$, where $\alpha_{2}r-\alpha_{1}$ divides $\alpha_{2}N-\alpha_{1}$ for every prime divisor $r$ of $N$. The set $\mathbb{A}$-$\mathcal{KS}(N)$ is called the set of $N$-Korselt bases in $\mathbb{A}$. Let $p, q$ be two distinct prime numbers. In this paper, we prove that each $pq$-Korselt base in $\mathbb{Z\setminus}\{ q+p-1\}$ generates at least one other in $\mathbb{Q}$-$\mathcal{KS}(pq)$. More precisely, we prove that if $(\mathbb{Q\setminus}\mathbb{Z})$-$\mathcal{KS}(pq)=\emptyset$, then $\mathbb{Z}$-$\mathcal{KS}(pq)=\{ q+p-1\}$.
Ghanmi, N. (2021). Connections on the rational Korselt set of $pq$. Hacettepe Journal of Mathematics and Statistics, Volume: 50 Issue: 1. https://doi.org/10.15672/hujms.659265