Dot product rearrangements.
Erdős, Paul, Weiss, Gary (1983)
International Journal of Mathematics and Mathematical Sciences
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Erdős, Paul, Weiss, Gary (1983)
International Journal of Mathematics and Mathematical Sciences
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Duffus, Dwight, Sands, Bill (2005)
The Electronic Journal of Combinatorics [electronic only]
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Ligia Cristea, Helmut Prodinger (2013)
Open Mathematics
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We investigate the visibility parameter, i.e., the number of visible pairs, first for words over a finite alphabet, then for permutations of the finite set {1, 2, …, n}, and finally for words over an infinite alphabet whose letters occur with geometric probabilities. The results obtained for permutations correct the formula for the expectation obtained in a recent paper by Gutin et al. [Gutin G., Mansour T., Severini S., A characterization of horizontal visibility graphs and combinatorics...
Germain, Jam (2008)
Integers
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Kimberling, Clark (2007)
Journal of Integer Sequences [electronic only]
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Corteel, Sylvie, Hitczenko, Paweł (2007)
Journal of Integer Sequences [electronic only]
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Bender, Edward A., Canfield, E. Rodney (2005)
The Electronic Journal of Combinatorics [electronic only]
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The Electronic Journal of Combinatorics [electronic only]
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Séminaire Lotharingien de Combinatoire [electronic only]
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Belbachir, Hacène, Rahmani, Mourad, Sury, B. (2011)
Journal of Integer Sequences [electronic only]
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Bhatnagar, Gaurav (2011)
The Electronic Journal of Combinatorics [electronic only]
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Merlini, Donatella, Uncini, Francesca, Verri, M. Cecilia (2004)
Integers
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Shattuck, Mark A., Wagner, Carl G. (2006)
The Electronic Journal of Combinatorics [electronic only]
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