OOIR: Observatory of International Research

Papers

(The TQCC of Semigroup Forum is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)

Article	Citations
Stability for coupled waves with locally disturbed Kelvin–Voigt damping	11
Canonical trace ideal and residue for numerical semigroup rings	10
Bi-atomic classes of positive semirings	10
The word problem for one-relation monoids: a survey	10
The stylic monoid	9
On Ehresmann semigroups	8
From A to B to Z	7
Levi-Civita functional equations and the status of spectral synthesis on semigroups	7
Levi-Civita functional equations and the status of spectral synthesis on semigroups-II	6
Trace- and pseudo-products: restriction-like semigroups with a band of projections	6
Set-theoretic solutions of the Yang–Baxter equation associated to weak braces	6
Identities of the stylic monoid	6
Semigroups of transformations whose restrictions belong to a given semigroup	5
Final state observability estimates and cost-uniform approximate null-controllability for bi-continuous semigroups	5
A network of congruences on an ample semigroup	5
Cross connections for normal bands and partial order on morphisms	5
On the word problem for special monoids	5
Spectrum and convergence of eventually positive operator semigroups	5
The rank of the inverse semigroup of partial automorphisms on a finite fence	4
Constructing uninorms via ordinal sums in the sense of A. H. Clifford	4
New representations of algebraic domains and algebraic L-domains via closure systems	4
Baer sums for a natural class of monoid extensions	4
Partial automorphisms and injective partial endomorphisms of a finite undirected path	4
On transfer Krull monoids	4
Hypercyclic sequences of weighted translations on hypergroups	4

Two weaker variants of congruence permutability for monoid varieties	4
Orientation-preserving and orientation-reversing mappings: a new description	4
Topologies on the symmetric inverse semigroup	4
An Ehresmann-Schein-Nambooripad type theorem for DRC-semigroups	4
Commutative monoid homology	4
Limit varieties of J-trivial monoids	4
Semiring identities of finite inverse semigroups	4
Congruences on quasi completely regular semirings	3
On the globalization of geometric partial (co)modules in the categories of topological spaces and algebras	3
Tropical representations and identities of the stylic monoid	3
The ideals of the monoid of all partial order-preserving extensive transformations	3
Unique factorization properties in commutative monoid rings with zero divisors	3
Abundant semigroup algebras which are Azumaya	3
Free product on semihypergroups	3
An extension of the Rådström cancellation theorem to cornets	3
Chinese syzygies by insertions	3
Endotypes of partial equivalence relations	3
A construction of the free digroup	3
A note on locally compact subsemigroups of compact groups	3
The inheritance of symmetry conditions in commutative semigroup cohomology	3
Abelian and symmetric generalized digroups	3
Self-similar monoids related to Hahn groups	3
Topological properties of the binary supremum function	2
The Lawson number of a semitopological semilattice	2
Unit-regular and semi-balanced elements in various semigroups of transformations	2
Various types of completeness in topologized semilattices	2
Spectral properties of locally eventually positive operator semigroups	2
On covers of acts over monoids with condition $$(PF'')$$ and envelopes of S-acts	2
Scalable monoids and quantity calculus	2
On the atomic structure of torsion-free monoids	2
Endomorphisms of semigroups of oriented transformations	2
$$({{\mathscr {F}}},{{\mathscr {G}}})$$-abundant semigroups	2
On varieties of flat nil-semirings	2
On the infinitesimal generator of an optimal state semigroup	2
Distribution of genus among numerical semigroups with fixed Frobenius number	2
A monoid structure on the set of all binary operations over a fixed set	2
Right-orderability versus left-orderability for monoids	2
Ideal Connes amenability of $$l^{1}$$-Munn algebras and its application to semigroup algebras	2
Regular, unit-regular, and idempotent elements of semigroups of transformations that preserve a partition	2
Characterization of Orlicz admissibility	2
Formations of inverse semigroups	2
Tied monoids	2
Stability of characters and filters for weighted semilattices	2
A simple spectral theory of polynomially bounded solutions and applications to differential equations	2
Comments on “Semigroups of transformations whose restrictions belong to a given semigroup”	2
Atoms of root-closed submonoids of $$\mathbb {Z}^2$$	2
Periodic behavior in families of numerical and affine semigroups via parametric Presburger arithmetic	2
Semigroups and evolutionary equations	2
Strong atoms in monadically Krull monoids	2
A survey of Schreier-type extensions of monoids	2

Johnson pseudo-contractibility of certain semigroup algebras. II	2
Isomorphisms of semirings of continuous binary relations on topological spaces	2
A formula for the conductor of a semimodule of a numerical semigroup with two generators	2
Quasi-polynomial growth of numerical and affine semigroups with constrained gaps	1
Lattices of varieties of plactic-like monoids	1
On the value set of 1-forms for plane branches	1
Uniform stability of a family of resolvent operators in Hilbert spaces	1
Hofmann–Mislove through the lenses of Priestley	1
Large sets near idempotent and its product	1
Boundedness of partial difference transforms for heat semigroups generated by discrete Laplacian	1
Well-posedness of non-autonomous transport equation on metric graphs	1
Extensions of dissipative and symmetric operators	1
Algebraic products of tensor products	1
Outer inverses in semigroups belonging to the prescribed Green’s equivalence classes	1
Joint continuity in semitopological monoids and semilattices	1
Globalization of partial actions of semigroups	1
The damped wave equation with acoustic boundary conditions and non-locally reacting surfaces	1
On the structure of glrac semigroups	1
On sensitive sets and regionally proximal sets of group actions	1
The monoid of orientation-preserving k-extensive transformations	1
Remark on the identities of the grammic monoid with three generators	1
Growth bounds for $$\alpha $$-times resolvent families	1
On bases of identities of finite central locally orthodox completely regular semigroups	1
Zigzag structures in IP* sets	1
Partition regularity of polynomial systems near zero	1
Well-posedness and stability results for some nonautonomous abstract linear hyperbolic equations with memory	1
Finitely and non-finitely related words	1
Tropical linear representations of the Chinese monoid	1
Property A for hypergroups	1
Convolution algebra for extended Feller convolution	1
Elementary characterization of essential $${\mathscr {F}}$$-sets and its combinatorial consequences	1
Grammic monoids with three generators	1
On certain semigroups of transformations whose restrictions belong to a given semigroup	1
On d-semigroups, r-semigroups, dr-semigroups and their subclasses	1
Numerical semigroups generated by quadratic sequences	1
Incidence monoids: automorphisms and complexity	1
Elaborating the word problem for free idempotent-generated semigroups over the full transformation monoid	1
On pure $$\kappa $$-sparse gapsets	1
Arithmetic of additively reduced monoid semidomains	1
Centralizers in graph products of semigroups	1
On the algebraic invariants of certain affine semigroup rings	1
On the admissibility of observation operators for evolution families	1
Density of type-dependent sets in Krull monoids with analytic structure	1
Combinatorially rich sets in arbitrary semigroups	1
Locally Hausdorff tight groupoids generalised	1
Analysis and control of integro-differential Volterra equations with delays	1
Constructions of free dibands and tribands	1
Proportionally modular numerical semigroups generated by arithmetic progressions	1
Torsion factors of commutative monoid semirings	1
A subsemigroup of the rook monoid	1
Connected objects in categories of S-acts	1
A note on Garside monoids and $${\mathscr {M}}$$-braces	1
Formations of orthodox semigroups	1
Spectrum of partial automorphisms of regular rooted tree	1
Levi-Civita functional equations on commutative monoids with tractable prime ideals	1
Well-posedness and asynchronous exponential growth of an age-weight structured fish population model with nonautonomous past	1
Complete classification of finite semigroups for which the inverse monoid of local automorphisms is a $$\varDelta $$-semigroup	1
On subamalgams of partially ordered monoids	1
Editorial Note	1
Force recurrence of semigroup actions	1
Algebraic characterizations of some relative notions of size	1
On the structure of semigroups whose regular elements are completely regular	1
Perturbation theory for fractional evolution equations in a Banach space	1
$$\aleph _0$$-categoricity of semigroups II	1
A simple proof of a multidimensional Borg–Levinson type theorem	1
Asymptotic behavior and representation of solutions to a Volterra kind of equation with a singular kernel	1