Algebra Universalis

Article	Citations
A non-finitely based involution semigroup of order five	10
Structure theorems for idempotent residuated lattices	9
The structure of generalized BI-algebras and weakening relation algebras	9
Semiring identities of the Brandt monoid	7
Results in L-algebras	6
Abstractly constructed prime spectra	5
Equational theories of upper triangular tropical matrix semigroups	5
Finite representability of semigroups with demonic refinement	4
Constructing illoyal algebra-valued models of set theory	4
The structure of finite commutative idempotent involutive residuated lattices	4
Perfect locales and localic real functions	4
Choice-free duality for orthocomplemented lattices by means of spectral spaces	4
Every minimal dual discriminator variety is minimal as a quasivariety	3
Lifting, n-dimensional spectral resolutions, and n-dimensional observables	3
Invariance of projective modules in $$\mathsf {Sup}$$ under self-duality	3
Properties not retained by pointed enrichments of finite lattices	3
Correction to: Injective hulls for ordered algebras	3
On semiconic idempotent commutative residuated lattices	3
Anticommutativity and the triangular lemma	3
Axioms for signatures with domain and demonic composition	3
Improved bounds on the size of the smallest representation of relation algebra $$32_{65}$$	2
Grätzer–Hofmann–Lawson–Jung–Sünderhauf duality	2
Residual finiteness and related properties in monounary algebras and their direct products	2
Filter and weak link topologies	2
Projectivity in (bounded) commutative integral residuated lattices	2

Essential adjunction of a strong unit to an archimedean lattice-ordered group	2
Catoids and modal convolution algebras	2
The number fields that are $${O}^{*}$$-fields	2
Strongly minimal Steiner systems II: coordinatization and quasigroups	2
Lattices from graph associahedra and subalgebras of the Malvenuto–Reutenauer algebra	2
The spectrum problem for Abelian $$\ell $$-groups and MV-algebras	2
On saturated varieties of posemigroups	2
Torsion theories and coverings of preordered groups	2
Conjunctive join-semilattices	2
Duality for $$\kappa $$-additive complete atomic modal algebras	2
Three roads to complete lattices: orders, compatibility, polarity	2
Lattice characterization of finite nilpotent groups	2
Epimorphisms in varieties of subidempotent residuated structures	1
Dualities for subresiduated lattices	1
On joins of complemented sublocales	1
On fraction-dense algebraic frames	1
De Morgan clones and four-valued logics	1
Semilattice sums of algebras and Mal’tsev products of varieties	1
Embeddings of o-groups of finite archimedean rank	1
On Jónsson’s problem for groupoids of relations with operation of binary cylindrification	1
Truncations of ordered abelian groups	1
Mitschke’s theorem is sharp	1
Difference–restriction algebras of partial functions: axiomatisations and representations	1
Uniform continuity of pointfree real functions via farness and related Galois connections	1
On a new construction of pseudocomplemented semilattices	1
On semigroup constructions induced by commuting retractions on a set	1
Representing subalgebras as retracts of finite subdirect powers	1
The structure group of a non-degenerate effect algebra	1
Lattice-ordered pregroups are semi-distributive	1
Characterizing the commutator in varieties with a difference term	1
Algebraic frames in which dense elements are above dense compact elements	1
Canonical extensions, free completely distributive lattices, and complete retracts	1
Closed sets of finitary functions between finite fields of coprime order	1
Equivalence à la Mundici for commutative lattice-ordered monoids	1
Remarks about the Q-lattice of the variety of lattices	1
Big lattices of hereditary and natural classes of linear modular lattices	1
Split epimorphisms as a productive tool in Universal Algebra	1
Lattices and quantales of ideals of semigroups and their preservation under Morita contexts	1
On algebras of binary relations with conjunctive operations	1
Topological representation of double Boolean algebras	1
Extremality, left-modularity and semidistributivity	1
Congruence lattices of connected monounary algebras	1
Coextensive varieties via central elements	1
Saturated free algebras and almost indiscernible theories	1
Lattices do not distribute over powerset	1
Characterising certain compactifications of frames with special attention to Freudenthal	1
Lattices of retracts of direct products of two finite chains and notes on retracts of lattices	1
Perfect extensions of de Morgan algebras	1
Some partial results on the cancellation law for the tensor product of complete lattices	1
On automorphisms of categories with applications to universal algebraic geometry	1

A finite axiomatization of positive MV-algebras	1
Spectral properties of cBCK-algebras	1
The structure of completely meet irreducible congruences in strongly Fregean algebras	1
Duality for normal lattice expansions and sorted residuated frames with relations	1
Algebras from congruences	1
Lattice Burnside rings	1
Lattices with normal elements	1
Rings in which idempotents generate maximal or minimal ideals	1
Some further results on pointfree convex geometry	0
A note on the Knaster–Tarski Fixpoint Theorem	0
The “zero-two” law in Orlicz–Kantorovich spaces	0
Diagram induced properties of congruence lattices	0
Vaughan-Lee’s nilpotent loop of size 12 is finitely based	0
Higher commutators in semigroups with zero	0
Generalizing Galvin and Jónsson’s classification to $$N_5$$	0
Topological representations of Lawson compact algebraic L-domains and Scott domains	0
Topology of closure systems in algebraic lattices	0
Homomorphic images of affine quandles	0
Admissible subsets and completions of ordered algebras	0
Divisibility on certain o-groups of matrices	0
Sufficient conditions for the finiteness of the 3-generated lattice with modular and distributive type elements among generators	0
On a statement of O. Frink about free pseudo-complemented meet-semilattices	0
The maximal class 2-groups generate the same variety	0
Another look on tense and related operators	0
The complexity of homomorphism factorization	0
Adjoint maps between implicative semilattices and continuity of localic maps	0
Topologies of pointwise convergence in the first order languages and in affine spaces	0
Mal’tsev condition satisfaction problems for conditions which imply edge terms	0
Neutrabelian algebras	0
Lattice universality of locally finite 2-groups	0
The category of G-posets	0
A relatively finite-to-finite universal but not Q-universal quasivariety	0
Reversibility of disconnected structures	0
Majority-closed minions of Boolean functions	0
Idempotent identities in f-rings	0
Identical inclusions of semilattices	0
Affine completeness of the algebra of full binary trees	0
Lacunary series, algebraic normal forms, convolutions	0
On geometric posets and partial matroids	0
Quasi-Engel varieties of lattice-ordered groups	0
Jónsson Jónsson–Tarski algebras	0
Factor principal congruences and Boolean products in filtral varieties	0
Some structural and residual properties of 2-semilattices	0
Existence of cube terms in finite algebras	0
The lattice of monomial clones on finite fields	0
Priestley-style duality for DN-algebras	0
On the representation of measures over bounded lattices	0
Finitely based congruence varieties	0
Connected topological lattice-ordered groups	0
Mal’tsev products of varieties, I	0
Not all nilpotent monoids are finitely related	0
On k-ary parts of maximal clones	0
Riesz and pre-Riesz monoids	0
What makes a Stone topological algebra Profinite	0
Congruence-simple multiplicatively idempotent semirings	0
On principal element lattices	0
Canonical extensions of lattices are more than perfect	0
Varieties with existentially definable factor congruences	0
Adjunction of a strong unit to a hyper-archimedean lattice-ordered group	0
Characterizations of pseudocomplemented lattices by excluded 0-sublattices	0
Test sets for equality of terms in the additive structure of ordinals augmented with right multiplication by $$\omega $$	0
A theorem of Mumford and Ramanujam for universal algebras	0
On epimorphisms of ordered algebras	0
Expanding Belnap: dualities for a new class of default bilattices	0
Stone space partitions indexed by a poset	0
Mal’tsev products of varieties, II	0
On regularity and injectivity of the ring of real-continuous functions on a topoframe	0
On the variety generated by generalized subreducts of Tarski’s algebras of relations	0
Free products of digroups	0
Submaximal clones over a three-element set up to minor-equivalence	0
On the cardinality of non-isomorphic intermediate rings of C(X)	0
Construction of existentially closed Abelian lattice-ordered groups using Fraïssé limits	0
Esakia duals of regular Heyting algebras	0
Mal’cev conditions corresponding to identities for compatible reflexive relations	0
Solution to two problems on ideally conjunctive join-semilattices	0
Localic transitivity	0
Sandwiches for promise constraint satisfaction	0
A frame-theoretic perspective on Esakia duality	0
Varieties of ordered algebras as categories	0
Two results on Fremlin’s Archimedean Riesz space tensor product	0

Efficient realizations of closure systems	0
Solving a fixed number of equations over finite groups	0
Monounary algebras containing subalgebras with meet-irreducible congruence lattice	0
Multiplayer rock–paper–scissors	0
Bubble lattices I: Structure	0
Choice-free topological duality for implicative lattices and Heyting algebras	0
Surjective polymorphisms of directed reflexive cycles	0
Free and cofree S-quantales	0
Existential relations on infinite structures	0
On the lattice of conatural classes of linear modular lattices	0
Weakly Schreier extensions for general algebras	0
On the representation of ordered semigroups by transformations of ordered sets	0
On relatively elementary definability of graph classes in the class of semigroups	0
The assembly of a pointfree bispace and its two variations	0
Right-cancellable protomodular algebras	0
An algebraic theory of clones	0
Acts with identities in the congruence lattice	0
On the number of universal algebraic geometries	0
Nuclear ranges in implicative semilattices	0
Another problem of Jónsson and McKenzie from 1982: refinement properties for connected powers of posets	0
Hull classes in compact regular frames	0
Free-lattice functors weakly preserve epi-pullbacks	0
Equidecomposable magmas	0
Closed sets of finitary functions between products of finite fields of coprime order	0
The least left n-trinilpotent congruence on the free trioid	0
On the complexity of equational decision problems for finite height complemented and orthocomplemented modular lattices	0
Automorphisms and strongly invariant relations	0
Generalized quasiorders and the Galois connection $${\textbf {End}}$$–$$\varvec{{{\,\textrm{gQuord}\,}}}$$	0
On the Boolean algebra induced by a unital $$\ell $$-group	0
G. Czédli’s tolerance factor lattice construction and weak ordered relations	0
Minimum proper extensions in some lattices of subalgebras	0
Was Ulam right? II: small width and general ideals	0
The modal logic of abelian groups	0
The number of languages with maximum state complexity	0
Joins and meets in effect algebras	0
Reflections and powers of multisorted minions	0
The Tschantz and the alvin higher conditions are equivalent in congruence distributive varieties	0
Galois connections for bilattices	0
On the convergence rate of the fraction of simple algebras	0
Finitary shadows of compact subgroups of $$S(\omega )$$	0
Semilinear De Morgan monoids and epimorphisms	0