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    JCT
    2008
    42views more  JCT 2008»
    On sets of integers whose shifted products are powers
    14 years 24 days ago
    On sets of integers whose shifted products are powers
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    C. L. Stewart
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    JCT
    2008
    35views more  JCT 2008»
    Maximal periods of (Ehrhart) quasi-polynomials
    14 years 24 days ago
    Maximal periods of (Ehrhart) quasi-polynomials
    Download  www.oberlin.edu
    A quasi-polynomial is a function defined of the form q(k) = cd(k) kd + cd-1(k) kd-1 +
    Matthias Beck, Steven V. Sam, Kevin M. Woods
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    JCT
    2008
    58views more  JCT 2008»
    Sharp thresholds for the phase transition between primitive recursive and Ackermannian Ramsey numbers
    14 years 24 days ago
    Sharp thresholds for the phase transition between primitive recursive and Ackermannian Ramsey numbers
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    Menachem Kojman, Gyesik Lee, Eran Omri, Andreas We...
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    JCT
    2008
    103views more  JCT 2008»
    A bijective proof of Jackson's formula for the number of factorizations of a cycle
    14 years 24 days ago
    A bijective proof of Jackson's formula for the number of factorizations of a cycle
    Download  www.lix.polytechnique.fr
    Factorizations of the cyclic permutation (1 2 . . . N) into two permutations with respectively n and m cycles, or, equivalently, unicellular bicolored maps with N edges and n whit...
    Gilles Schaeffer, Ekaterina A. Vassilieva
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    JCT
    2008
    53views more  JCT 2008»
    A major index for matchings and set partitions
    14 years 24 days ago
    A major index for matchings and set partitions
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    We introduce a statistic pmaj(P) for partitions of [n], and show that it is equidistributed with cr2, the number of 2-crossings, over all partitions of [n] with given sets of mini...
    William Y. C. Chen, Ira M. Gessel, Catherine H. Ya...
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    JCT
    2008
    71views more  JCT 2008»
    Primitive decompositions of Johnson graphs
    14 years 24 days ago
    Primitive decompositions of Johnson graphs
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    A transitive decomposition of a graph is a partition of the edge set together with a group of automorphisms which transitively permutes the parts. In this paper we determine all t...
    Alice Devillers, Michael Giudici, Cai Heng Li, Che...
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    JCT
    2008
    57views more  JCT 2008»
    Partially directed paths in a wedge
    14 years 24 days ago
    Partially directed paths in a wedge
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    The enumeration of lattice paths in wedges poses unique mathematical challenges. These models are not translationally invariant, and the absence of this symmetry complicates both ...
    E. J. Janse van Rensburg, T. Prellberg, A. Rechnit...
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    JCT
    2008
    84views more  JCT 2008»
    Fix-Mahonian Calculus, II: Further statistics
    14 years 24 days ago
    Fix-Mahonian Calculus, II: Further statistics
    Download  www-irma.u-strasbg.fr
    Using classical transformations on the symmetric group and two transformations constructed in Fix-Mahonian Calculus I, we show that several multivariable statistics are equidistrib...
    Dominique Foata, Guo-Niu Han
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    JCT
    2008
    39views more  JCT 2008»
    Sets of elements that pairwise generate a linear group
    14 years 24 days ago
    Sets of elements that pairwise generate a linear group
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    J. R. Britnell, A. Evseev, Robert M. Guralnick, P....
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    JCT
    2008
    77views more  JCT 2008»
    Counting descent pairs with prescribed tops and bottoms
    14 years 24 days ago
    Counting descent pairs with prescribed tops and bottoms
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    Given sets X and Y of positive integers and a permutation = 12
    John T. Hall, Jeffrey B. Remmel
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