A. Grigutis

activity

20162026

most citedRuin probability in the three-seasonal discrete-time risk model

9 citations · 32 across the 18 of their papers we have counts for

collaborators

Showing 2025Show all

3 papers · 1 filter

math.NT2025★ 1 cited

Note on the positivity of the real part of the log-derivative of the Riemann $ξ$ -function near the critical line

Andrius Grigutis, Lukas Turčinskas

In this work, we investigate the positivity of the real part of the log-derivative of the Riemann $ξ$ -function in the region $1/2 + 1/ lo g t < σ < 1$ , where $t$ is sufficiently la…

math.NT2025

Picturesque convolution-like recurrences and partial sums' generation

Ignas Gasparavičius, Andrius Grigutis, Juozas Petkelis

Let $b = {b_{0}, b_{1}, \dots}$ be the known sequence of numbers such that $b_{0} \neq = 0$ . In this work, we develop methods to find another sequence ${\pmb a}=\{a_0,\,a_1,\,\ldot…

math.PR2025

Several facts about Theodor Wittstein, Gaetano Balducci, and some expressions of the net single premiums under their mortality assumption

Andrius Grigutis, Eglė Matulevičiūtė, Mindaugas Venckevičius

The mathematical essence in life insurance spins around the search of the nu\-me\-ri\-cal characteristics of the random variables $T_{x}$ , $ν^{T_{x}}$ , $T_{x} ν^{T_{x}}$ , etc., where $ν$ (d…

Note on the positivity of the real part of the log-derivative of the Riemann ξ-function near the critical line

Picturesque convolution-like recurrences and partial sums' generation

Several facts about Theodor Wittstein, Gaetano Balducci, and some expressions of the net single premiums under their mortality assumption

Note on the positivity of the real part of the log-derivative of the Riemann $ξ$ -function near the critical line