The Number Of right ideals of given codimension over a finite feild
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作者:
Bacher, Roland
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Univ Grenoble 1, Inst Fournier, CNRS, UMR 5582, 100 Rue Maths, F-38402 St Martin Dheres, FranceUniv Grenoble 1, Inst Fournier, CNRS, UMR 5582, 100 Rue Maths, F-38402 St Martin Dheres, France
Bacher, Roland
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Reutenauer, Christophe
[2
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[1] Univ Grenoble 1, Inst Fournier, CNRS, UMR 5582, 100 Rue Maths, F-38402 St Martin Dheres, France
The number of right ideals of codimension n of the ring of non-commutative polynomials in two variables over the finite field F-q is a polynomial q-analogue of the n-th Catalan number. A generalization involving a q-analogue of Fuss-Catalan numbers holds for more variables. We discuss also a few aspects of right congruences over a free monoid.
机构:
Natl Polytech Inst, Ctr Res & Adv Studies, Math Dept, Mexico City 07738, DF, MexicoNatl Polytech Inst, Ctr Res & Adv Studies, Math Dept, Mexico City 07738, DF, Mexico
Tochimani, A.
Villarreal, R. H.
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Natl Polytech Inst, Ctr Res & Adv Studies, Math Dept, Mexico City 07738, DF, MexicoNatl Polytech Inst, Ctr Res & Adv Studies, Math Dept, Mexico City 07738, DF, Mexico