V. H. Fernandes

activity

20122023

most citedRanks of monoids of endomorphisms of a finite undirected path

10 citations · 24 across the 18 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.RA2015★ 8 cited

A note on generators of the endomorphism semigroup of an infinite countable chain

Ilinka Dimitrova, Vítor H. Fernandes, Jörg Koppitz

In this note, we consider the semigroup $O (X)$ of all order endomorphisms of an infinite chain $X$ and the subset $J$ of $O (X)$ of all transformations $α$ such that $∣ I m (α) ∣ = ∣ X ∣$ .…

math.RA2015

A note on bilateral semidirect product decompositions of some monoids of order-preserving partial permutations

Vítor H. Fernandes, Teresa M. Quinteiro

In this note we consider the monoid $P O D I_{n}$ of all monotone partial permutations on ${1, \dots, n}$ and its submonoids $DP_{n}$ , $P O I_{n}$ and $\mathcal…

math.RA2015

Presentations for monoids of finite partial isometries

Vítor H. Fernandes, Teresa M. Quinteiro

In this paper we give presentations for the monoid $DP_{n}$ of all partial isometries on ${1, \dots, n}$ and for its submonoid $O DP_{n}$ of all order-preserving pa…