Heights in finite projective space, and a problem on directed graphs.
Nathanson, Melvyn B., Sullivan, Blair D. (2008)
Integers
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Nathanson, Melvyn B., Sullivan, Blair D. (2008)
Integers
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T. Pezda (2004)
Open Mathematics
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We find all possible cycle-lengths for polynomial mappings in two variables over rings of integers in quadratic extensions of rationals.
Bohdan Zelinka (1979)
Mathematica Slovaca
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Věroslav Jurák (1980)
Časopis pro pěstování matematiky
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Ciobanu, Laura, Radomirović, Saša (2006)
The Electronic Journal of Combinatorics [electronic only]
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Fleming, Thomas, Diesl, Alexander (2005)
Algebraic & Geometric Topology
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Lidia Badura (2014)
Discussiones Mathematicae Graph Theory
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Let G = G1 ∪ G2 be the sum of two simple graphs G1,G2 having a common edge or G = G1 ∪ e1 ∪ e2 ∪ G2 be the sum of two simple disjoint graphs G1,G2 connected by two edges e1 and e2 which form a cycle C4 inside G. We give a method of computing the determinant det A(G) of the adjacency matrix of G by reducing the calculation of the determinant to certain subgraphs of G1 and G2. To show the scope and effectiveness of our method we give some examples