• 제목/요약/키워드: combinatorial webs

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COMBINATORIAL WEBS OF QUANTUM LIE SUPERALGEBRA sl(1|1)

  • Kim, Dong-Seok
    • East Asian mathematical journal
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    • 제25권4호
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    • pp.469-479
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    • 2009
  • Temperley-Lieb algebras had been generalized to web spaces for rank 2 simple Lie algebras which led us to link invariants for these Lie algebras as a generalization of Jones polynomial. Recently, Geer found a new generalization of Jones polynomial for some Lie superalgebras. In this paper, we study the quantum sl(1|1) representation theory using the web space and find a finite presentation of the representation category (for generic q) of the quantum sl(1|1).

ON THE (n, k)-TH CATALAN NUMBERS

  • Kim, Dong-Seok
    • 대한수학회논문집
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    • 제23권3호
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    • pp.349-356
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    • 2008
  • In this paper, we generalize the Catalan number to the (n, k)-th Catalan numbers and find a combinatorial description that the (n, k)-th Catalan numbers is equal to the number of partitions of n(k-1)+2 polygon by (k+1)-gon where all vertices of all (k+1)-gons lie on the vertices of n(k-1)+2 polygon.