Note on normal sequences of chain complexes
Klaus Heiner Kamps (1978)
Colloquium Mathematicae
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Klaus Heiner Kamps (1978)
Colloquium Mathematicae
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D. W. Hajek, R. G. Wilson (1982)
Matematički Vesnik
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J. Mioduszewski (1971)
Colloquium Mathematicae
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Jarmila Hedlíková (1977)
Mathematica Slovaca
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Vítězslav Novák, Tomáš Novotný (2005)
Discussiones Mathematicae - General Algebra and Applications
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Continuity of isotone mappings and embeddings of a chain G into another chain are studied. Especially, conditions are found under which the set of points of discontinuity of such a mapping is dense in G.
Marko D. Lekop (1973)
Publications de l'Institut Mathématique
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S. Parameshwara Bhatta (2005)
Czechoslovak Mathematical Journal
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In this paper the notion of weak chain-completeness is introduced for pseudo-ordered sets as an extension of the notion of chain-completeness of posets (see [3]) and it is shown that every isotone map of a weakly chain-complete pseudo-ordered set into itself has a least fixed point.
F. Bergeron, J. Berstel, S. Brlek (1994)
Journal de théorie des nombres de Bordeaux
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The aim of this paper is to present a unifying approach to the computation of short addition chains. Our method is based upon continued fraction expansions. Most of the popular methods for the generation of addition chains, such as the binary method, the factor method, etc..., fit in our framework. However, we present new and better algorithms. We give a general upper bound for the complexity of continued fraction methods, as a function of a chosen strategy, thus the total number of...
Hisahiro Tamano (1971)
Fundamenta Mathematicae
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Đuro Kurepa (1982)
Publications de l'Institut Mathématique
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T. Matsuoka, H. Seno (2008)
Mathematical Modelling of Natural Phenomena
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We consider the number of trophic levels in a food chain given by the equilibrium state for a simple mathematical model with ordinary differential equations which govern the temporal variation of the energy reserve in each trophic level. When a new trophic level invades over the top of the chain, the chain could lengthen by one trophic level. We can derive the condition that such lengthening could occur, and prove that the possibly longest chain is globally stable. In some specific...