On equations $\sigma(n)=\sigma(n+k)$ and $\varphi(n)=\varphi(n+k)$

zbMath1429.11013arXiv1001.2511MaRDI QIDQ4609159

Tomohiro Yamada

Publication date: 29 March 2018

Full work available at URL: https://arxiv.org/abs/1001.2511

Mathematics Subject Classification ID

Arithmetic functions; related numbers; inversion formulas (11A25)

Related Items (4)

Primitive root biases for prime pairs. I: Existence and non-totality of biases ⋮ On the equation $\varphi (n)=\varphi (n+1)$ ⋮ On the Difference in Values of the Euler Totient Function Near Prime Arguments ⋮ On the equations ϕ(n) = ϕ(n + k) and ϕ(p − 1) = ϕ(q − 1)

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