jj-araujo
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Selected Publications
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2002
Araújo, João.
"
Normal semigroups of endomorphisms of proper independence algebras are idempotent generated
."
Proc. Edinb. Math. Soc. (2)
. 45 (2002): 205-217.
Abstract
Website
n/a
Araújo, João.
"
On idempotent generated semigroups
."
Semigroup Forum
. 65 (2002): 138-140.
Abstract
Website
n/a
2003
Araújo, João, and Janusz Konieczny.
"
Automorphism groups of centralizers of idempotents
."
J. Algebra
. 269 (2003): 227-239.
Abstract
Website
n/a
Araújo, João.
"
Idempotent generated endomorphisms of an independence algebra
."
Semigroup Forum
. 67 (2003): 464-467.
Abstract
Website
n/a
Araújo, J., J. D. Mitchell, and N. Silva.
"
On generating countable sets of endomorphisms
."
Algebra Universalis
. 50 (2003): 61-67.
Abstract
Website
n/a
2005
Araújo, J., and J. D. Mitchell.
"
An elementary proof that every singular matrix is a product of idempotent matrices
."
Amer. Math. Monthly
. 112 (2005): 641-645.
Abstract
Website
n/a
2007
Araújo, João, and Janusz Konieczny.
"
Automorphisms of endomorphism monoids of relatively free bands
."
Proc. Edinb. Math. Soc. (2)
. 50 (2007): 1-21.
Abstract
Website
n/a
Araújo, João, and Janusz Konieczny.
"
A method of finding automorphism groups of endomorphism monoids of relational systems
."
Discrete Math.
. 307 (2007): 1609-1620.
Abstract
Website
n/a
Araújo, J., and J. D. Mitchell.
"
Relative ranks in the monoid of endomorphisms of an independence algebra
."
Monatsh. Math.
. 151 (2007): 1-10.
Abstract
Website
n/a
2009
Araújo, João, and Friedrich Wehrung.
"
Embedding properties of endomorphism semigroups
."
Fund. Math.
. 202 (2009): 125-146.
Abstract
Website
n/a
Araújo, João, and Janusz Konieczny.
"
General theorems on automorphisms of semigroups and their applications
."
J. Aust. Math. Soc.
. 87 (2009): 1-17.
Abstract
Website
n/a
2010
Araújo, João, Edward Dobson, and Janusz Konieczny.
"
Automorphisms of endomorphism semigroups of reflexive digraphs
."
Math. Nachr.
. 283 (2010): 939-964.
Abstract
Website
n/a
Araújo, J., P. V. Bünau, J. D. Mitchell, and M. Neunhöffer.
"
Computing automorphisms of semigroups
."
J. Symbolic Comput.
. 45 (2010): 373-392.
Abstract
Website
n/a
2011
Araújo, João, Vítor H. Fernandes, Manuel M. Jesus, Victor Maltcev, and James D. Mitchell.
"
Automorphisms of partial endomorphism semigroups
."
Publ. Math. Debrecen
. 79 (2011): 23-39.
Abstract
Website
n/a
Araújo, João, and Michael Kinyon.
"
An elegant 3-basis for inverse semigroups
."
Semigroup Forum
. 82 (2011): 319-323.
Abstract
Website
n/a
Araújo, J., J. D. Mitchell, and Csaba Schneider.
"
Groups that together with any transformation generate regular semigroups for idempotent generated semigroups
."
J. Algebra
. 343 (2011): 93-106.
Abstract
Website
n/a
Araújo, João, and Michael Kinyon.
"
Independent axiom systems for nearlattices
."
Czechoslovak Math. J.
. 61(136) (2011): 975-992.
Abstract
Website
n/a
Araújo, João, Michael Kinyon, and Janusz Konieczny.
"
Minimal paths in the commuting graphs of semigroups
."
European J. Combin.
. 32 (2011): 178-197.
Abstract
Website
n/a
Araújo, João, Mário Edmundo, and Steven Givant.
"
{$v^\ast$}-algebras, independence algebras and logic
."
Internat. J. Algebra Comput.
. 21 (2011): 1237-1257.
Abstract
Website
n/a
2013
Araújo, João, Michael Kinyon, and António Malheiro.
"
A characterization of adequate semigroups by forbidden subsemigroups
."
Proc. Roy. Soc. Edinburgh Sect. A
. 143 (2013): 1115-1122.
Abstract
Website
n/a
Araújo, João, Peter J. Cameron, James D. Mitchell, and Max Neunhöffer.
"
The classification of normalizing groups
."
J. Algebra
. 373 (2013): 481-490.
Abstract
Website
n/a
Araújo, João, Wolfram Bentz, and Peter J. Cameron.
"
Groups synchronizing a transformation of non-uniform kernel
."
Theoret. Comput. Sci.
. 498 (2013): 1-9.
Abstract
Website
n/a
2014
Araújo, João, Janusz Konieczny, and António Malheiro.
"
Conjugation in semigroups
."
J. Algebra
. 403 (2014): 93-134.
Abstract
Website
n/a
Araújo, João, and Michael Kinyon.
"
Inverse semigroups with idempotent-fixing automorphisms
."
Semigroup Forum
. 89 (2014): 469-474.
Abstract
Website
n/a
Araújo, João, Wolfram Bentz, and Janusz Konieczny.
"
The largest subsemilattices of the endomorphism monoid of an independence algebra
."
Linear Algebra Appl.
. 458 (2014): 60-79.
Abstract
Website
n/a
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Recent Publications
Two generalizations of homogeneity in groups with applications to regular semigroups
Permutation groups and transformation semigroups: results and problems
Imprimitive permutations in primitive groups
Directed graphs of inner translations of semigroups
Primitive groups, graph endomorphisms and synchronization
The classification of partition homogeneous groups with applications to semigroup theory
more