Search Results for: 11A25

On the software computation of the formulae for the n-th prime number

Dimitar G. Dimitrov Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 3, Pages 198-206 DOI: 10.7546/nntdm.2019.25.3.198-206 Download full paper: PDF, 188 Kb Details Authors and affiliations Dimitar G. Dimitrov Faculty of … Continue reading

Comments Off on On the software computation of the formulae for the n-th prime number

Extension factor: definition, properties and problems. Part 1

Krassimir T. Atanassov and József Sándor Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 3, Pages 36-43 DOI: 10.7546/nntdm.2019.25.3.36-43 Download full paper: PDF, 166 Kb Details Authors and affiliations Krassimir T. … Continue reading

Comments Off on Extension factor: definition, properties and problems. Part 1

Inequalities between the arithmetic functions φ, ψ and σ. Part 2

József Sándor and Krassimir Atanassov Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 2, Pages 30—35 DOI: 10.7546/nntdm.2019.25.2.30-35 Download full paper: PDF, 161 Kb Details Authors and affiliations József Sándor Department … Continue reading

Comments Off on Inequalities between the arithmetic functions φ, ψ and σ. Part 2

Generalized arithmetic subderivative

Pentti Haukkanen Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 2, Pages 1—7 DOI: 10.7546/nntdm.2019.25.2.1-7 Download full paper: PDF, 150 Kb Details Authors and affiliations Pentti Haukkanen  Faculty of Information Technology … Continue reading

Comments Off on Generalized arithmetic subderivative

Power GCD and power LCM matrices defined on GCD-closed sets over unique factorization domains

Y. A. Awad, T. Kadri and R. H. Mghames Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 150—166 DOI: 10.7546/nntdm.2019.25.1.150-166 Download full paper: PDF, 225 Kb Details Authors and … Continue reading

Comments Off on Power GCD and power LCM matrices defined on GCD-closed sets over unique factorization domains

A note on the OEIS sequence A228059

Jose Arnaldo Bebita Dris and Doli-Jane Uvales Tejada Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 199—205 DOI: 10.7546/nntdm.2019.25.1.199-205 Download full paper: PDF, 153 Kb Details Authors and affiliations … Continue reading

Comments Off on A note on the OEIS sequence A228059

Inequalities between the arithmetic functions φ, ψ and σ. Part 1

Krassimir T. Atanassov and József Sándor Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 50—53 DOI: 10.7546/nntdm.2019.25.1.50-53 Download full paper: PDF, 149 Kb Details Authors and affiliations Krassimir T. … Continue reading

Comments Off on Inequalities between the arithmetic functions φ, ψ and σ. Part 1

Minimal sets of shifted values of the Euler totient function

Martin Kreh and Katrin Neuenstein Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 36—47 DOI: 10.7546/nntdm.2019.25.1.36-47 Download full paper: PDF, 193 Kb Details Authors and affiliations Martin Kreh Institute … Continue reading

Comments Off on Minimal sets of shifted values of the Euler totient function

New form of the Newton’s binomial theorem

Mladen V. Vassilev-Missana Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 48—49 DOI: 10.7546/nntdm.2019.25.1.48-49 Download full paper: PDF, 119 Kb Details Authors and affiliations Mladen V. Vassilev-Missana 5, V. … Continue reading

Comments Off on New form of the Newton’s binomial theorem

A note on Euler’s totient function

József Sándor Notes on Number Theory and Discrete Mathematics Print ISSN 1310–5132, Online ISSN 2367–8275 Volume 25, 2019, Number 1, Pages 32—35 DOI: 10.7546/nntdm.2019.25.1.32-35 Download full paper: PDF, 157 Kb Details Authors and affiliations József Sándor Department of Mathematics, Babes-Bolyai … Continue reading

Comments Off on A note on Euler’s totient function