Arithmetic progressions with common difference divisible by small primes
N. Saradha, R. Tijdeman (2008)
Acta Arithmetica
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N. Saradha, R. Tijdeman (2008)
Acta Arithmetica
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Yahya Ould Hamidoune, Alain Plagne (2002)
Acta Arithmetica
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(2009)
Acta Arithmetica
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Bin Feng (2019)
Czechoslovak Mathematical Journal
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We find, via the Selberg-Delange method, an asymptotic formula for the mean of arithmetic functions on certain APs. It generalizes a result due to Cui and Wu (2014).
Tomasz Schoen (2011)
Acta Arithmetica
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Florian Luca, Anirban Mukhopadhyay, Kotyada Srinivas (2010)
Acta Arithmetica
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Yong-Gao Chen (2005)
Acta Arithmetica
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M. Artigue, E. Isambert, M. Perrin, A. Zalc (1978)
Fundamenta Mathematicae
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Régis de la Bretèche, Kevin Ford, Joseph Vandehey (2013)
Acta Arithmetica
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We improve known bounds for the maximum number of pairwise disjoint arithmetic progressions using distinct moduli less than x. We close the gap between upper and lower bounds even further under the assumption of a conjecture from combinatorics about Δ-systems (also known as sunflowers).
Augustus DeMorgan
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Brahmagupta
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Andrzej Grzegorczyk (1956)
Fundamenta Mathematicae
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Ram Krishna Pandey (2010)
Mathematica Bohemica
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Suppose runners having nonzero distinct constant speeds run laps on a unit-length circular track. The Lonely Runner Conjecture states that there is a time at which a given runner is at distance at least from all the others. The conjecture has been already settled up to seven () runners while it is open for eight or more runners. In this paper the conjecture has been verified for four or more runners having some particular speeds using elementary tools.