Primitive free quartics with specified norm and trace
Stephen D. Cohen, Sophie Huczynska (2003)
Acta Arithmetica
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Stephen D. Cohen, Sophie Huczynska (2003)
Acta Arithmetica
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Houmem Belkhechine, Pierre Ille, Robert E. Woodrow (2017)
Discussiones Mathematicae Graph Theory
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Let V be a finite vertex set and let (, +) be a finite abelian group. An -labeled and reversible 2-structure defined on V is a function g : (V × V) (v, v) : v ∈ V → such that for distinct u, v ∈ V, g(u, v) = −g(v, u). The set of -labeled and reversible 2-structures defined on V is denoted by ℒ(V, ). Given g ∈ ℒ(V, ), a subset X of V is a clan of g if for any x, y ∈ X and v ∈ V X, g(x, v) = g(y, v). For example, ∅, V and v (for v ∈ V) are clans of g, called trivial. An element g of...
Kui Liu (2010)
Acta Arithmetica
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T. W. Müller, J.-C. Schlage-Puchta (2004)
Acta Arithmetica
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Stephen D. Cohen, Sophie Huczynska (2010)
Acta Arithmetica
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Florian Luca, P. G. Walsh (2004)
Colloquium Mathematicae
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We show that there exist infinitely many positive integers r not of the form (p-1)/2 - ϕ(p-1), thus providing an affirmative answer to a question of Neville Robbins.
Wenguang Zhai (2002)
Acta Arithmetica
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Lindström, B. (1999)
Portugaliae Mathematica
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Yonghui Wang, Claus Bauer (2004)
Acta Arithmetica
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L. Carlitz (1972)
Rendiconti del Seminario Matematico della Università di Padova
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Toke M. Carlsen, Søren Eilers (2007)
RAIRO - Theoretical Informatics and Applications
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We present an algorithm which for any aperiodic and primitive substitution outputs a finite representation of each special word in the shift space associated to that substitution, and determines when such representations are equivalent under orbit and shift tail equivalence. The algorithm has been implemented and applied in the study of certain new invariants for flow equivalence of substitutional dynamical systems.
Roman Nedela, Martin Škoviera (1990)
Mathematica Slovaca
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Alain Togbé, Bo He (2008)
Acta Arithmetica
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Yonghui Wang, Claus Bauer (2004)
Acta Arithmetica
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