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

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

The numbers 242206083 · 2 38880 ± 1 are twin primes. The number p = 2375063906985 · 2 19380 − 1 is a Sophie Germain prime, i.e. p and 2p + 1 are both primes. For p = 4610194180515 · 2 5056 − 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.… (More)

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

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

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… (More)

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 → s(n, n, n) is also deduced.

- 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.

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

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