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Publication:2889921
zbMath1244.20055MaRDI QIDQ2889921
Metýn Koç, Hayrullah Ayık, Gonca Ayık
Publication date: 8 June 2012
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Catalan numberssemigroups of order-preserving transformationssemigroups of order-decreasing transformations
Exact enumeration problems, generating functions (05A15) Semigroups of transformations, relations, partitions, etc. (20M20)
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Ranks and presentations for order-preserving transformations with one fixed point ⋮ Abundance of the ideals of the order-preserving and decreasing full transformation semigroup ⋮ Ranks of nilpotent subsemigroups of order-preserving and decreasing transformation semigroups ⋮ Combinatorial results for semigroups of order-preserving and \(A\)-decreasing finite transformations ⋮ Combinatorial results for semigroups of orientation-preserving and order-decreasing transformations ⋮ On the rank of generalized order-preserving transformation semigroups ⋮ On nilpotent subsemigroups of the order-preserving and decreasing transformation semigroups ⋮ Categorification of the Catalan monoid. ⋮ Zero-divisor graphs of Catalan monoid ⋮ On elements of finite semigroups of order-preserving and decreasing transformations
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