Centro de Matemática Computacional e Estocástica

output

20032022

most citedSquare-root algorithms for maximum correntropy estimation of linear discrete-time systems in presence of non-Gaussian noise

80 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing math.GRShow all

6 papers · 1 filter

math.GR2020

Integrals of groups II

João Araújo, Peter J. Cameron, Carlo Casolo +2

An $in t e g r a l$ of a group $G$ is a group $H$ whose commutator subgroup is isomorphic to $G$ . This paper continues the investigation on integrals of groups started in the work arXiv:…

math.GR2019★ 3 cited

Variants of epigroups and primary conjugacy

Maria Borralho, Michael Kinyon

In a semigroup $S$ with fixed $c \in S$ , one can construct a new semigroup $(S, \cdot_{c})$ called a \emph{variant} by defining $x \cdot_{c} y := x cy$ . Elements $a, b \in S$ are \emph{primari…

math.GR2018★ 11 cited

Conjugacy in inverse semigroups

Joao Araujo, Michael Kinyon, Janusz Konieczny

In a group $G$ , elements $a$ and $b$ are conjugate if there exists $g \in G$ such that $g^{- 1} a g = b$ . This conjugacy relation, which plays an important role in group theory, can be…

math.GR2017★ 5 cited

Decidability and Independence of Conjugacy Problems in Finitely Presented Monoids

João Araújo, Michael Kinyon, Janusz Konieczny +1

There have been several attempts to extend the notion of conjugacy from groups to monoids. The aim of this paper is study the decidability and independence of conjugacy problems fo…

math.GR2015★ 7 cited

Primitive groups and synchronization

João Araújo, Wolfram Bentz, Peter J. Cameron +2

Let $Ω$ be a set of cardinality $n$ , $G$ a permutation group on $Ω$ , and $f : Ω \to Ω$ a map which is not a permutation. We say that $G$ \emph{synchronizes} $f$ if the transformation s…

math.GR2014★ 26 cited

The rank of the semigroup of transformations stabilising a partition of a finite set

Joao Araujo, Wolfram Bentz, J. D. Mitchell +1

Let $P$ be a partition of a finite set $X$ . We say that a full transformation $f : X \to X$ preserves (or stabilizes) the partition $P$ if for all $P\in \mathcal{P…