Algebra Universalis

Article	Citations
Equational theories of upper triangular tropical matrix semigroups	8
Lattice characterization of finite nilpotent groups	7
On joins of complemented sublocales	6
On the cardinality of non-isomorphic intermediate rings of C(X)	5
Canonical extensions, free completely distributive lattices, and complete retracts	5
Reversibility of disconnected structures	4
Minimum proper extensions in some lattices of subalgebras	4
Automorphisms and strongly invariant relations	4
On the variety generated by generalized subreducts of Tarski’s algebras of relations	3
Characterizations of pseudocomplemented lattices by excluded 0-sublattices	3
Nuclear ranges in implicative semilattices	3
Constructing illoyal algebra-valued models of set theory	3
Joins and meets in effect algebras	3
Universal slices of the category of graphs	3
Perfect extensions of de Morgan algebras	3
Adjoint maps between implicative semilattices and continuity of localic maps	3
Canonical extensions of lattices are more than perfect	2
Projectivity in (bounded) commutative integral residuated lattices	2
Connected topological lattice-ordered groups	2
Multisorted Boolean clones determined by binary relations up to minion homomorphisms	2
On z-elements of multiplicative lattices	2
Riesz and pre-Riesz monoids	2
The “zero-two” law in Orlicz–Kantorovich spaces	2
Near-unanimity-closed minions of Boolean functions	2
On complete lattices of radical submodules and $$ z $$-submodules	2

The lattice of monomial clones on finite fields	2
Admissible subsets and completions of ordered algebras	2
On a statement of O. Frink about free pseudo-complemented meet-semilattices	2
Submaximal clones over a three-element set up to minor-equivalence	1
Jónsson Jónsson–Tarski algebras	1
Unilinear residuated lattices: axiomatization, varieties and FEP	1
Coextensive varieties via central elements	1
Semiring identities of the Brandt monoid	1
Homomorphic images of affine quandles	1
On the representation of ordered semigroups by transformations of ordered sets	1
On regularity and injectivity of the ring of real-continuous functions on a topoframe	1
Exploring new topologies for the theory of clones	1
Abstractly constructed prime spectra	1
Localic transitivity	1
A frame-theoretic perspective on Esakia duality	1
Extremality, left-modularity and semidistributivity	1
A structure theorem for truncations on an Archimedean vector lattice	1
On the Boolean algebra induced by a unital $$\ell $$-group	1
The complexity of homomorphism factorization	1
Difference–restriction algebras of partial functions: axiomatisations and representations	1
Algebras from congruences	1
Adjunction of a strong unit to a hyper-archimedean lattice-ordered group	1
Odd and even Fibonacci lattices arising from a Garside monoid	1
Lattices with normal elements	1
Duality for $$\kappa $$-additive complete atomic modal algebras	1
The number of languages with maximum state complexity	1
The structure of finite commutative idempotent involutive residuated lattices	1
On a new construction of pseudocomplemented semilattices	1
Characterization of self-majorizing elements in Archimedean vector lattices	1
Two results on Fremlin’s Archimedean Riesz space tensor product	1
An algebraic theory of clones	1
Right-cancellable protomodular algebras	1
On algebras of binary relations with conjunctive operations	1
A relatively finite-to-finite universal but not Q-universal quasivariety	1
Choice-free duality for orthocomplemented lattices by means of spectral spaces	1
Idempotent identities in f-rings	1
Natural dualities for varieties generated by finite positive MV-chains	0
Another problem of Jónsson and McKenzie from 1982: refinement properties for connected powers of posets	0
Varieties with existentially definable factor congruences	0
Residual finiteness and related properties in monounary algebras and their direct products	0
Every minimal dual discriminator variety is minimal as a quasivariety	0
Mal’tsev products of varieties, I	0
Surjective polymorphisms of directed reflexive cycles	0
Graphs of finite algebras: edges, and connectivity	0
Priestley-style duality for DN-algebras	0
Conjunctive join-semilattices	0
Duality for normal lattice expansions and sorted residuated frames with relations	0
Galois connections for bilattices	0
Topological representations of Lawson compact algebraic L-domains and Scott domains	0
Permutation invariant boolean states	0

On the complexity of equational decision problems for finite height complemented and orthocomplemented modular lattices	0
Another look on tense and related operators	0
Relative lengths of Maltsev conditions	0
Cartesian closed varieties I: the classification theorem	0
Mitschke’s theorem is sharp	0
Dualities for subresiduated lattices	0
Generalized quasiorders and the Galois connection $${\textbf {End}}$$–$$\varvec{{{\,\textrm{gQuord}\,}}}$$	0
Right-preordered groups from a categorical perspective	0
The number fields that are $${O}^{*}$$-fields	0
Factor principal congruences and Boolean products in filtral varieties	0
Quasivarieties of algebras whose compact relative congruences are principal	0
Quasi-Engel varieties of lattice-ordered groups	0
Equivalence à la Mundici for commutative lattice-ordered monoids	0
Some further results on pointfree convex geometry	0
Grätzer–Hofmann–Lawson–Jung–Sünderhauf duality	0
Strongly minimal Steiner systems II: coordinatization and quasigroups	0
$$\varvec{S}$$-preclones and the Galois connection $$\varvec{{}^{S}{}\textrm{Pol}}$$–$$\varvec{{}^{S}{}\textrm{Inv}}$$, Part I	0
The least left n-trinilpotent congruence on the free trioid	0
Graphs of finite algebras: maximality, rectangularity, and decomposition	0
Saturated free algebras and almost indiscernible theories	0
De Morgan clones and four-valued logics	0
Correction: Projectivity in (bounded) commutative integral residuated lattices	0
Finite representability of semigroups with demonic refinement	0
Nilpotent groups in lattice framework	0
Closed sets of finitary functions between products of finite fields of coprime order	0
On relatively elementary definability of graph classes in the class of semigroups	0
On k-ary parts of maximal clones	0
Lattices of retracts of direct products of two finite chains and notes on retracts of lattices	0
Diagram induced properties of congruence lattices	0
Finitely based congruence varieties	0
A theorem of Mumford and Ramanujam for universal algebras	0
Stone space partitions indexed by a poset	0
Solution to two problems on ideally conjunctive join-semilattices	0
Override and restricted union for partial functions	0
On the representation of measures over bounded lattices	0
Existential relations on infinite structures	0
A finite axiomatization of positive MV-algebras	0
Weakly Schreier extensions for general algebras	0
The assembly of a pointfree bispace and its two variations	0
The modal logic of abelian groups	0
Decomposition of $$\hbox {d}_{\text {0}}$$-algebras	0
On the lattice of conatural classes of linear modular lattices	0
What makes a Stone topological algebra Profinite	0
Esakia duals of regular Heyting algebras	0
On automorphisms of categories with applications to universal algebraic geometry	0
Measuring associativity: graph algebras of undirected graphs	0
Semilinear De Morgan monoids and epimorphisms	0
A finite representation of relation algebra $$\varvec{1896_{3013}}$$	0
Varieties of ordered algebras as categories	0
Topology of closure systems in algebraic lattices	0
Uniform continuity of pointfree real functions via farness and related Galois connections	0
Free products of digroups	0
Majority-closed minions of Boolean functions	0
Hull classes in compact regular frames	0
Mal’tsev products of varieties, II	0
On minimal semiring generating sets of finitely generated commutative parasemifields	0
Mal’tsev condition satisfaction problems for conditions which imply edge terms	0
Topologies of pointwise convergence in the first order languages and in affine spaces	0
Lacunary series, algebraic normal forms, convolutions	0
Divisibility on certain o-groups of matrices	0
On semigroup constructions induced by commuting retractions on a set	0
Topological representation of double Boolean algebras	0
On the number of universal algebraic geometries	0
Some remarks on type n lattice-ordered algebras and a question of Huijsmans	0
Bubble lattices I: Structure	0
Acts with identities in the congruence lattice	0
Higher commutators in semigroups with zero	0
Characterizing the commutator in varieties with a difference term	0
Efficient realizations of closure systems	0
Spectral properties of cBCK-algebras	0
Free-lattice functors weakly preserve epi-pullbacks	0
Algebraic frames in which dense elements are above dense compact elements	0
Catoids and modal convolution algebras	0
On the networks of large embeddings	0
Correction to: Injective hulls for ordered algebras	0
Congruence-simple multiplicatively idempotent semirings	0
Was Ulam right? II: small width and general ideals	0
Characterizations of U-frames and frames that are finitely a U-frame	0
Not all nilpotent monoids are finitely related	0
The Freudenthal and other compactifications of continuous frames	0

The structure of completely meet irreducible congruences in strongly Fregean algebras	0
Monounary algebras containing subalgebras with meet-irreducible congruence lattice	0
Vaughan-Lee’s nilpotent loop of size 12 is finitely based	0
Improved bounds on the size of the smallest representation of relation algebra $$32_{65}$$	0
Algebraic frames in Priestley duality	0
Truncations of ordered abelian groups	0
Slim patch lattices as absolute retracts and maximal lattices	0
Some partial results on the cancellation law for the tensor product of complete lattices	0
Big lattices of hereditary and natural classes of linear modular lattices	0
Choice-free topological duality for implicative lattices and Heyting algebras	0
On fraction-dense algebraic frames	0
Reorienting quandle orbits	0