Sadegh Nazardonyavi

activity

20122019

most citedSuperabundant numbers, their subsequences and the Riemann hypothesis

26 citations · 33 across the 6 of their papers we have counts for

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2 papers · 1 filter

math.NT2013

Delicacy of the Riemann hypothesis and certain subsequences of superabundant numbers

Sadegh Nazardonyavi, Semyon Yakubovich

Robin's theorem is one of the ingenious reformulation of the Riemann hypothesis (RH). It states that the RH is true if and only if $σ (n) < e^{γ} n lo g lo g n$ for all $n > 5040$ where $σ(n…

math.NT2013★ 2 cited

Sharper estimates for Chebyshev's functions $ϑ$ and $ψ$

Sadegh Nazardonyavi, Semyon Yakubovich

In this article we present some improved results for Chebyshev's functions $ϑ$ and $ψ$ using the new zero-free region obtained by H. Kadiri and the calculated the first $10…

Delicacy of the Riemann hypothesis and certain subsequences of superabundant numbers

Sharper estimates for Chebyshev's functions ϑ and ψ

Sharper estimates for Chebyshev's functions $ϑ$ and $ψ$