Results on fixed point theorems
J. Achari (1978)
Matematički Vesnik
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J. Achari (1978)
Matematički Vesnik
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J. Achari (1979)
Publications de l'Institut Mathématique
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Matusevich, Laura Felicia (2000)
Beiträge zur Algebra und Geometrie
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J. Siciak (1962)
Annales Polonici Mathematici
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Krystyna Ziętak (1974)
Applicationes Mathematicae
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Charles N. Delzell, Laureano González-Vega, Henri Lombardi (1992)
Extracta Mathematicae
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In this note it is presented a new rational and continuous solution for Hilbert's 17th problem, which asks if an everywhere positive polynomial can be expressed as a sum of squares of rational functions. This solution (Theorem 1) improves the results in [2] in the sense that our parametrized solution is continuous and depends in a rational way on the coefficients of the problem (what is not the case in the solution presented in [2]). Moreover our method simplifies the proof and it is...
Jacinto González Pachón, Sixto Ríos-Insua (1992)
Extracta Mathematicae
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We consider the multiobjective decision making problem. The decision maker's (DM) impossibility to take consciously a preference or indifference attitude with regard to a pair of alternatives leads us to what we have called doubt attitude. So, the doubt may be revealed in a conscient way by the DM. However, it may appear in an inconscient way, revealing judgements about her/his attitudes which do not follow a certain logical reasoning. In this paper, doubt will be considered...
Jean-Louis Colliot-Thélène (1983)
Inventiones mathematicae
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Krystyna Ziętak (1974)
Applicationes Mathematicae
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Eduard Wirsing (1993)
Acta Arithmetica
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W. Szafrański (1983)
Applicationes Mathematicae
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J. C. Mayer, E. D. Tymchatyn
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CONTENTS1. Introduction......................................................................52. Rim-type and decompositions..........................................83. Defining sequences and isomorphisms..........................184. Embedding theorem.......................................................265. Construction of universal and containing spaces...........326. References....................................................................39