| Publication | Date of Publication | Type |
|---|
| https://portal.mardi4nfdi.de/entity/Q4548291 | 2002-08-26 | Paper |
| The Regular J -Class of the Power Semigroup of a Completely 0-Simple Semigroup | 1990-01-01 | Paper |
| Boundedly factorizable \({\mathcal S}\)-indecomposable semigroups generated by two elements | 1987-01-01 | Paper |
| The 0-minimal ideal of the global of a combinatorial completely 0-simple semigroup | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3760741 | 1987-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3816251 | 1987-01-01 | Paper |
| Isomorphism problem of power semigroups of completely 0-simple semigroups | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3760742 | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3791367 | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3031020 | 1985-01-01 | Paper |
| On chains whose power semigroups are lattices | 1984-01-01 | Paper |
| On the power semigroup of the group of integers | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3222376 | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3677934 | 1983-01-01 | Paper |
| Nil-orders of commutative nil-bounded semigroups | 1982-01-01 | Paper |
| Binary systems all subsets of which are recognizable | 1982-01-01 | Paper |
| Commutative cancellative semigroups with nontrivial homomorphisms into nonnegative real numbers | 1982-01-01 | Paper |
| Semilattice indecomposable semigroups with a unique idempotent | 1982-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3946352 | 1982-01-01 | Paper |
| Strongly Reversible Groups | 1982-01-01 | Paper |
| Free E-m Groups and Free E-m Semigroups | 1982-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3969123 | 1982-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3936878 | 1981-01-01 | Paper |
| Extensions of partially ordered Abelian groups | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3686904 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3864715 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3879445 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3904788 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3912974 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3924394 | 1980-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3050638 | 1979-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3208899 | 1979-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3885934 | 1979-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3050636 | 1978-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4182900 | 1978-01-01 | Paper |
| Commutative archimedean cancellative idempotent-free semigroups with an infinite cyclic group as structure group | 1977-01-01 | Paper |
| Completely semisimple inverse \(\Delta\) - semigroups admitting principal series | 1977-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4137363 | 1977-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4148158 | 1977-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4154769 | 1977-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4155085 | 1977-01-01 | Paper |
| Homomorphisms of Commutative Cancellative Semigroups into Nonnegative Real Numbers | 1976-01-01 | Paper |
| Putcha's problem on maximal cancellative subsemigroups | 1976-01-01 | Paper |
| Basic study of \(\mathfrak N\)-semigroups and their homomorphisms. II | 1975-01-01 | Paper |
| Commutative cancellative semigroups without idempotents | 1975-01-01 | Paper |
| Quasi-orders, Generalized Archimedeaness and Semilattice Decompositions | 1975-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4090377 | 1975-01-01 | Paper |
| Note on attainability of identities on bands | 1974-01-01 | Paper |
| Basic study of \({\mathfrak N}\)-semigroups and their homomorphisms | 1974-01-01 | Paper |
| Irreducible ℜ︁-Semigroups | 1974-01-01 | Paper |
| Complementary Semigroups and Exponent Semigroups of Order Bounded Groups | 1974-01-01 | Paper |
| N-congruences of N-semigroups | 1973-01-01 | Paper |
| Remark on the smallest semilattice congruence | 1973-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4138931 | 1973-01-01 | Paper |
| Finitely Generated Steady ℜ-Semigroups | 1973-01-01 | Paper |
| Finitely generated $\mathfrak{N}$-semigroup and quotient group | 1973-01-01 | Paper |
| Semilattice Congruences Viewed from Quasi-Orders | 1973-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5655570 | 1972-01-01 | Paper |
| On exponential semigroups, I | 1972-01-01 | Paper |
| On exponential semigroups, II | 1972-01-01 | Paper |
| The Study of Commutative Semigroups with Greatest Group-Homomorphism | 1972-01-01 | Paper |
| On Putcha's theorem concerning semilattice of archimedean semigroups | 1972-01-01 | Paper |
| Is minimal group congruence smallest? | 1972-01-01 | Paper |
| Finiteness of lattice of congruences on commutative semigroups | 1972-01-01 | Paper |
| Note on the greatest semilattice decomposition of semigroups | 1972-01-01 | Paper |
| Positive rational semigroups and commutative power joined cancellative semigroups without idempotent | 1971-01-01 | Paper |
| Commutative semigroups with greatest group-homomorphism | 1971-01-01 | Paper |
| Notes on commutative power joined semigroups | 1971-01-01 | Paper |
| On commutative exclusive semigroups | 1971-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5581673 | 1970-01-01 | Paper |
| Abelian groups and $\Re$-semigroups | 1970-01-01 | Paper |
| Notes on finite left amenable semigroups | 1970-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5618516 | 1970-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5659773 | 1970-01-01 | Paper |
| Finite union of commutative power joined semigroups | 1970-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5581674 | 1969-01-01 | Paper |
| Commutative semigroups whose lattice of congruences is a chain | 1969-01-01 | Paper |
| Notes on Subdirect Products of Semigroups and Rectangular Bands | 1969-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5616202 | 1969-01-01 | Paper |
| Semigroups satisfying identity xy=f(x,y) | 1969-01-01 | Paper |
| Maximal or Greatest Homomorphic Images of Given Type | 1968-01-01 | Paper |
| Construction of Trees and Commutative Archimedean Semigroups | 1968-01-01 | Paper |
| Errata to Volume 120 | 1968-01-01 | Paper |
| Semigroups satisfying $xy^m = yx^m = \left( {xy^m } \right)^n$ | 1968-01-01 | Paper |
| Note on homogeneous homomorphisms | 1968-01-01 | Paper |
| On free contents | 1968-01-01 | Paper |
| On concentric semigroups | 1968-01-01 | Paper |
| Notes on medial Archimedean semigroups without idempotent | 1968-01-01 | Paper |
| Notes on groupoids and their automorphism groups | 1967-01-01 | Paper |
| Decomposability of extension and its application to finite semigroups | 1967-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5583883 | 1967-01-01 | Paper |
| Subdirect products of semigroups and rectangular bands | 1967-01-01 | Paper |
| Another proof of two decomposition theorems of semigroups | 1966-01-01 | Paper |
| The lattice of congruences of locally cyclic semigroups | 1966-01-01 | Paper |
| Notes on commutative Archimedean semigroups, I | 1966-01-01 | Paper |
| On locally cyclic semigroups | 1966-01-01 | Paper |
| Minimal or smallest relation of given type | 1966-01-01 | Paper |
| Attainability of systems of identities on semigroups | 1966-01-01 | Paper |
| Non-negative integer valued functions on commutative groups, I | 1965-01-01 | Paper |
| The theory of operations on binary relations | 1965-01-01 | Paper |
| Correction and Supplement to the Paper the Direct Product of Right Singular Semigroups and Certain Groupoids | 1965-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5522979 | 1965-01-01 | Paper |
| Semigroups in Which all Subsemigroups are Left Ideals | 1965-01-01 | Paper |
| Report on attainability of systems of identities | 1965-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5343388 | 1965-01-01 | Paper |
| Subsemigroups of completely $O$-simple semigroups, I | 1965-01-01 | Paper |
| Semigroups with a maximal homomorphic image having zero | 1965-01-01 | Paper |
| Operations on binary relations and their applications | 1964-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4402548 | 1964-01-01 | Paper |
| Extension of Groupoids with Operators | 1964-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5343404 | 1964-01-01 | Paper |
| Another proof of a theorem concerning the greatest semilattice-decomposition of a semigroup | 1964-01-01 | Paper |
| Semigroups of positive integer vectors | 1963-01-01 | Paper |
| The Direct Product of Right Singular Semi-Groups and Certain Groupoids | 1963-01-01 | Paper |
| Examples of direct products of semigroups or groupoids | 1963-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5733555 | 1963-01-01 | Paper |
| Minimal commutative divisible semigroups | 1963-01-01 | Paper |
| Semigroups and their subsemigroups lattices | 1963-01-01 | Paper |
| Note on $\Gamma ^* $-semigroups | 1962-01-01 | Paper |
| A note on the extension of semigroups with operators | 1962-01-01 | Paper |
| Certain characterization of singular semigroups | 1962-01-01 | Paper |
| Note on a semigroup having no proper subsemigroup | 1961-01-01 | Paper |
| Note on the direct product of certain groupoids | 1961-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3849925 | 1961-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3274187 | 1960-01-01 | Paper |
| Note on finite semigroups which satisfy certain group-like condition | 1960-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3281995 | 1960-01-01 | Paper |
| Note on finite simple $c$-lndecomposable semigroups | 1959-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3272496 | 1959-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3272506 | 1959-01-01 | Paper |
| Notes on translations of a semigroup | 1958-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3252710 | 1958-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3253836 | 1958-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3244118 | 1957-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3244121 | 1957-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3244122 | 1957-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3246385 | 1957-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3231197 | 1956-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3232321 | 1956-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3235822 | 1956-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3236684 | 1956-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3236710 | 1956-01-01 | Paper |
| Counter examples to Wallace's problem | 1955-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5850543 | 1955-01-01 | Paper |
| On translations of a semigroup | 1955-01-01 | Paper |
| Existence of greatest decomposition of a semigroup | 1955-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3228628 | 1955-01-01 | Paper |
| On compact one-idempotent semi-groups | 1954-01-01 | Paper |
| Supplement to the paper ``On compact one-idempotent semigroups. | 1954-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5831351 | 1954-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5831352 | 1954-01-01 | Paper |
| Note on unipotent inversible semigroups | 1954-01-01 | Paper |
| On decompositions of a commutative semigroup | 1954-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5824694 | 1953-01-01 | Paper |
