Lie algebras graded by the root system .
Benkart, Georgia, Smirnov, Oleg (2003)
Journal of Lie Theory
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Benkart, Georgia, Smirnov, Oleg (2003)
Journal of Lie Theory
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R. Scheidler (2000)
Acta Arithmetica
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Foata, Dominique, Zeilberger, Doron (1987)
Séminaire Lotharingien de Combinatoire [electronic only]
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Han, Guo-Niu, Krattenthaler, Christian (1999)
Séminaire Lotharingien de Combinatoire [electronic only]
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Béla Bollobás, Paul Erdős, Guoping Jin (1993)
Acta Arithmetica
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Yonutz Stanchescu (1998)
Acta Arithmetica
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Let K be a finite set of lattice points in a plane. We prove that if |K| is sufficiently large and |K+K| < (4 - 2/s)|K| - (2s-1), then there exist s - 1 parallel lines which cover K. We also obtain some more precise structure theorems for the cases s = 3 and s = 4.
Lutz G. Lucht, Anke Schmalmack (2000)
Acta Arithmetica
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Myung-Hwan Kim (1993)
Acta Arithmetica
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Macdonald, Ian G. (2000)
Séminaire Lotharingien de Combinatoire [electronic only]
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