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On the monoid of order-preserving transformations of a finite chain whose ranges are intervals

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Resumo:We give a presentation for the monoid IOn of all order-preserving transformations of an n-chain whose ranges are intervals. We also consider the submonoid IOn- of IOn consisting of order-decreasing transformations, for which we determine the cardinality, the rank and a presentation.
Autores principais:Fernandes, Vítor H.
Assunto:Order-decreasing Order-preserving Presentations Transformations Algebra and Number Theory
Ano:2024
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade Nova de Lisboa
Idioma:inglês
Origem:Repositório Institucional da UNL
Descrição
Resumo:We give a presentation for the monoid IOn of all order-preserving transformations of an n-chain whose ranges are intervals. We also consider the submonoid IOn- of IOn consisting of order-decreasing transformations, for which we determine the cardinality, the rank and a presentation.