Generalized Rudin-Shapiro sequences
Jean-Paul Allouche, Pierre Liardet (1991)
Acta Arithmetica
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Jean-Paul Allouche, Pierre Liardet (1991)
Acta Arithmetica
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W. Królikowski (1991)
Annales Polonici Mathematici
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The concept of supercomplex structure is introduced in the pseudo-Euclidean Hurwitz pairs and its basic algebraic and geometric properties are described, e.g. a necessary and sufficient condition for the existence of such a structure is found.
Berenhaut, Kenneth S., Guy, Richard T., Vish, Nathaniel G. (2008)
Banach Journal of Mathematical Analysis [electronic only]
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Manjegani, Seyed Mahmoud (2008)
Banach Journal of Mathematical Analysis [electronic only]
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Diamandescu, A. (2004)
Acta Mathematica Universitatis Comenianae. New Series
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María Jesús de la Puente (2013)
Kybernetika
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In this paper we give a short, elementary proof of a known result in tropical mathematics, by which the convexity of the column span of a zero-diagonal real matrix is characterized by being a Kleene star. We give applications to alcoved polytopes, using normal idempotent matrices (which form a subclass of Kleene stars). For a normal matrix we define a norm and show that this is the radius of a hyperplane section of its tropical span.
M. O. Omeike, A. U. Afuwape (2010)
Kragujevac Journal of Mathematics
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Michał Trybulec (2008)
Formalized Mathematics
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This is the second article on regular expression quantifiers. [4] introduced the quantifiers m to n occurrences and optional occurrence. In the sequel, the quantifiers: at least m occurrences and positive closure (at least 1 occurrence) are introduced. Notation and terminology were taken from [8], several properties of regular expressions from [7].MML identifier: FLANG 3, version: 7.8.05 4.89.993
A. R. Moghaddamfar, S. M. H. Pooya, S. Navid Salehy, S. Nima Salehy (2012)
Matematički Vesnik
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Kowynia, Joanna (2005)
Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
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