V. H. Fernandes

collaborators

3 papers

math.RA2026

Groups of permutations that are even on maximal proper subsets, and related monoids

VÃtor H. Fernandes

Let $n$ be a positive integer and let $[n] = {1, 2, \dots, n}$ . Let $I^_{n}$ denote the group of permutations on $[n]$ whose restrictions to maximal proper subsets of $[n]$ are even, l…

math.RA2025

On monoids of monotone partial transformations of a finite chain whose domains and ranges are intervals

Hayrullah AyÄ±k, VÃtor H. Fernandes, Emrah Korkmaz

In this note, we consider the monoid $P I M_{n}$ of all partial monotone transformations on a chain with $n$ elements whose domains and ranges are intervals and its submono…

math.RA2025

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

Hayrullah AyÄ±k, VÃtor H. Fernandes, Emrah Korkmaz

In this paper, we consider the monoid $P I O_{n}$ , of all partial order-preserving transformations on a chain with $n$ elements whose domains and ranges are intervals, alon…