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- Karl-Heinz Indlekofer, Antal Járai
- Math. Comput.
- 1999

The numbers 242206083 · 238880 ± 1 are twin primes. The number p = 2375063906985 · 219380 − 1 is a Sophie Germain prime, i.e. p and 2p + 1 are both primes. For p = 4610194180515 · 25056 − 1, the numbers p, p + 2 and 2p + 1 are all primes. In the first days of October, 1995, Harvey Dubner [4] found the largest known twin primes with 5129 decimal digits. (Our… (More)

- Karl-Heinz Indlekofer, Antal Járai
- Math. Comput.
- 1996

- Karl-Heinz Indlekofer, S. Wehmeier
- Computers & Mathematics with Applications
- 2006

We describe the subgroups of the group Zm × Zn × Zr and derive a simple formula for the total number s(m,n, r) of the subgroups, where m,n, r are arbitrary positive integers. An asymptotic formula for the function n 7→ s(n, n, n) is also deduced.

In this paper we give characterizations for uniformly summable multiplicative functions in additive arithmetical semigroups.

- Karl-Heinz Indlekofer, Imre Kátai
- Periodica Mathematica Hungarica
- 2001

- Jean-Loup Mauclaire, Karl-Heinz Indlekofer, Imre Kátai
- 2013

In this article, we precise two results of Bagchi, the first one on the universality of the Riemann zeta function the second on its relation with the Riemann hypothesis.

With the decreasing feature size of today’s nanoelectronic circuits, the susceptibility to transient failures increases. New robust and self-adaptive designs are developed, which can handle transient error to some extent, but at the same time make testing for permanent faults more difficult. This paper reviews the “signature rollback“ scheme as a strategy… (More)

- O. I. Klesov, Karl-Heinz Indlekofer, Imre Kátai
- 2013

We consider the so-called empirical version of the Hsu–Robbins series and find conditions for the existence of its moments.

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