Combinatorial results for semigroups of order-preserving full transformations.
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Publication:2491176
DOI10.1007/s00233-005-0553-6zbMath1098.20049OpenAlexW1980586810MaRDI QIDQ2491176
Abdallah Laradji, Abdullahi Umar
Publication date: 26 May 2006
Published in: Semigroup Forum (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s00233-005-0553-6
Exact enumeration problems, generating functions (05A15) Factorials, binomial coefficients, combinatorial functions (05A10) Semigroups of transformations, relations, partitions, etc. (20M20)
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