20 Group theory and generalizations
 
20M30 Representation of semigroups; actions of semigroups on sets (40 articles) 
- 
Nagy, Attila; Tóth, Csaba:
		On special Rees matrix semigroups over semigroups.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 64
			(2023),
			issue 3,
		pp. 279-288
- 
Umar, Abdullahi:
		Presentations for subsemigroups of $PD_n$.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 69
			(2019),
			issue 2,
		pp. 417-426
- 
Golchin, Akbar; Rezaei, Parisa; Mohammadzadeh, Hossein:
		On strongly $(P)$-cyclic acts.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 59
			(2009),
			issue 3,
		pp. 595-611
- 
Bashir, Robert El; Kepka, Tomáš:
		Commutative zeropotent semigroups with few invariant congruences.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 58
			(2008),
			issue 4,
		pp. 865-885
- 
Bashir, Robert El; Kepka, Tomáš; Kechlibar, Marian:
		Commutative semigroups with few fully invariant congruences I.
		
			(English).
Acta Universitatis Carolinae. Mathematica et Physica,
		vol. 46
			(2005),
			issue 1,
		pp. 49-64
- 
Bashir, Robert El; Kepka, Tomáš; Kechlibar, Marian:
		Commutative semigroups with few fully invariant congruences II.
		
			(English).
Acta Universitatis Carolinae. Mathematica et Physica,
		vol. 46
			(2005),
			issue 1,
		pp. 65-75
- 
Sander, Wolfgang; Siedekum, Jens:
		Multiplication, distributivity and fuzzy-integral. I.
		
			(English).
Kybernetika,
		vol. 41
			(2005),
			issue 3,
		pp. [397]-422
- 
Sander, Wolfgang; Siedekum, Jens:
		Multiplication, distributivity and fuzzy-integral. II.
		
			(English).
Kybernetika,
		vol. 41
			(2005),
			issue 4,
		pp. [469]-496
- 
Sander, Wolfgang; Siedekum, Jens:
		Multiplication, distributivity and fuzzy-integral. III.
		
			(English).
Kybernetika,
		vol. 41
			(2005),
			issue 4,
		pp. [497]-518
- 
Grillet, Pierre Antoine:
		Cancellative actions.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 44
			(2003),
			issue 3,
		pp. 399-411
- 
Drewniak, Jósef; Sobera, Jolanta:
		Structure of partially ordered cyclic semigroups.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 53
			(2003),
			issue 4,
		pp. 777-791
- 
Rosales, J. C.; García-García, J. I.:
		Principal ideals of finitely generated commutative monoids.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 52
			(2002),
			issue 1,
		pp. 75-85
- 
Cho, Jung R.; Ježek, Jaroslav; Kepka, Tomáš:
		Paramedial groupoids.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 49
			(1999),
			issue 2,
		pp. 277-290
- 
Cho, Jung R.; Ježek, Jaroslav; Kepka, Tomáš:
		Simple paramedial groupoids.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 49
			(1999),
			issue 2,
		pp. 391-399
- 
Koubek, Václav:
		Finite-to-finite universal varieties of distributive double $p$-algebras.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 31
			(1990),
			issue 1,
		pp. 67-83
- 
Trnková, Věra:
		Products of metric, uniform and topological spaces.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 31
			(1990),
			issue 1,
		pp. 167-180
- 
Koubek, Václav:
		Representations in varieties of regular involution bands.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 31
			(1990),
			issue 2,
		pp. 201-211
- 
Puš, Vladimír:
		Representation of semigroups by products of simple graphs.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 30
			(1989),
			issue 2,
		pp. 227-234
- 
Lemin, A. J.:
		An application of the theory of isosceles (ultrametric) spaces to the Trnková-Vinárek theorem.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 29
			(1988),
			issue 3,
		pp. 427-434
- 
Trnková, Věra:
		Simultaneous representations in discrete structures.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 27
			(1986),
			issue 4,
		pp. 633-649
- 
Trnková, Věra:
		Countable Hausdorff spaces with countable weight.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 26
			(1985),
			issue 4,
		pp. 749-770
- 
Strecker, Reinhard:
		Construction of medial semigroups.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 25
			(1984),
			issue 4,
		pp. 689-697
- 
Sizer, Walter S.:
		Representations of group and semigroup actions.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 34
			(1984),
			issue 1,
		pp. 84-91
- 
Nguyen Van Vinh:
		Representation of semigroups by products of topological spaces with prescribed cardinal functions.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 24
			(1983),
			issue 2,
		pp. 317-323
- 
Miller, Ann; Pedersen, F. D.; Sizer, Walter S.:
		The semigroup of finite complexes of a group.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 33
			(1983),
			issue 3,
		pp. 337-343
- 
Kučera, Luděk:
		On the monoids of homomorphisms of semigroups with unity.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 23
			(1982),
			issue 2,
		pp. 369-381
- 
Vinárek, Jiří:
		Representations of commutative semigroups by products of metric $0$-dimensional spaces.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 23
			(1982),
			issue 4,
		pp. 715-726
- 
Vinárek, Jiří:
		Representations of countable commutative semigroups by products of weakly homogeneous spaces.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 21
			(1980),
			issue 2,
		pp. 219-229
- 
Sizer, Walter S.:
		Representations of semigroups of idempotents.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 30
			(1980),
			issue 3,
		pp. 369-375
- 
Lau, August:
		Finite Abelian semigroups represented into the power set of finite groups.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 29
			(1979),
			issue 1,
		pp. 159-162
- 
Vinárek, Jiří:
		Isomorphisms of products of weakly homogeneous spaces.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 20
			(1979),
			issue 4,
		pp. 796
- 
Trnková, Věra; Koubek, Václav:
		Isomorphisms of products of infinite graphs.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 19
			(1978),
			issue 4,
		pp. 639-652
- 
Luedeman, John K.; McMorris, F. R.; Sim, Soon Kiong:
		Semigroups for which every totally irreducible $S$-system is injective.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 19
			(1978),
			issue 1,
		pp. 27-35
- 
Trnková, Věra:
		Productive representations of semigroups by pairs of structures.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 18
			(1977),
			issue 2,
		pp. 383-391
- 
Trnková, Věra:
		Products of topological spaces represent any semigroup (Preliminary communication).
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 16
			(1975),
			issue 2,
		pp. 393-394
- 
Trnková, Věra:
		Spaces which admit negative powers and all roots (Preliminary communication).
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 15
			(1974),
			issue 3,
		pp. 571-572
- 
Abrhan, Imrich:
		О максимальных подалгебрах в унарных алгебрах.
		
			(Russian) [Maximal Subalgebras in Unary Algebras].
Matematický časopis,
		vol. 24
			(1974),
			issue 2,
		pp. 113-128
- 
Lesokhin, M. M.:
		Об отделимости подполугрупп характерами.
		
			(Russian) [On the separation of subsemigroups by characters].
Matematický časopis,
		vol. 24
			(1974),
			issue 2,
		pp. 129-138
- 
Křivka, Pavel:
		On representations of monoids as monoids of polynomials.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 13
			(1972),
			issue 1,
		pp. 121-136
- 
Tichý, Tomáš; Vinárek, Jiří:
		On the algebraic characterization of systems of $1-1$ partial mappings.
		
			(English).
Commentationes Mathematicae Universitatis Carolinae,
		vol. 13
			(1972),
			issue 4,
		pp. 711-720