On some general problems in the theory of partitions, I
P Erdös, P. Turán (1971)
Acta Arithmetica
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P Erdös, P. Turán (1971)
Acta Arithmetica
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Ji, Kathy Qing (2008)
The Electronic Journal of Combinatorics [electronic only]
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Marwan Amin Kutbi, Wutiphol Sintunavarat (2016)
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The aim of this paper is to introduce the concept of a new nonlinear multi-valued mapping so called weakly (α, ψ, ξ)-contractive mapping and prove fixed point results for such mappings in metric spaces. Our results unify, generalize and complement various results from the literature. We give some examples which support our main results while previous results in literature are not applicable. Also, we analyze the existence of fixed points for mappings satisfying a general contractive...
Ben Saïd, J.-N. Nicolas (2003)
Acta Arithmetica
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V. V. Chistyakov, A. Rychlewicz (2002)
Studia Mathematica
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We study set-valued mappings of bounded variation of one real variable. First we prove the existence of an extension of a metric space valued mapping from a subset of the reals to the whole set of reals with preservation of properties of the initial mapping: total variation, Lipschitz constant or absolute continuity. Then we show that a set-valued mapping of bounded variation defined on an arbitrary subset of the reals admits a regular selection of bounded variation. We introduce a notion...
Kağan Kurşungöz (2010)
Acta Arithmetica
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W. Klonecki (1966)
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Hadžić, O. (1996)
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Si verificano due congetture dell'Autore.
Sellers, James A. (2003)
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J. Achari (1978)
Matematički Vesnik
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G. Spiliopoulos (1991)
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International Journal of Mathematics and Mathematical Sciences
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