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Author: Kepka, Tomáš

• Kepka, Tomáš; Jančařík, Antonín; Michal, Jakub: Aritmetika III – změny číslic vedoucí k prvočíslům aneb variace na Bertrandův postulát. (Czech) [Arithmetic III – digits changes leading to prime numbers or variations on Bertrand‘s postulate]. Učitel matematiky, vol. 30 (2022), issue 2, pp. 77-91
• Jančařík, Antonín; Kepka, Tomáš; Volný, Ivan: Beznulá čísla. (Czech). Rozhledy matematicko-fyzikální, vol. 97 (2022), issue 1, pp. 13-18
• Havelková, Veronika; Jančařík, Antonín; Kepka, Tomáš: Aritmetika II – dělitelnost. Fibonacciho posloupnost. (Czech) [Arithmetics II – Divisibility. The Fibonacci sequence]. Učitel matematiky, vol. 29 (2021), issue 1, pp. 37-45
• Jančařík, Antonín; Kepka, Tomáš: Skupinové testování – oddělující systémy. (Czech) [Group testing – separation systems]. Pokroky matematiky, fyziky a astronomie, vol. 66 (2021), issue 4, pp. 230-237
• Jančařík, Antonín; Kepka, Tomáš: Aritmetika I – Harmonická čísla. (Czech) [Arithmetic I – Harmonic numbers]. Učitel matematiky, vol. 26 (2018), issue 1, pp. 29-37
• Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. IV. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 54 (2013), issue 1, pp. 3-22
• Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. V. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 54 (2013), issue 1, pp. 23-35
• Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. VI. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 54 (2013), issue 1, pp. 45-61
• Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. VII. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 54 (2013), issue 1, pp. 63-78
• Kepka, Tomáš; Němec, Petr: Ideal-simple semirings. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 2, pp. 5-16
• Kepka, Tomáš; Němec, Petr: Ideal-simple semirings. II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 2, pp. 17-29
• Kepka, Tomáš; Němec, Petr: Ideal-simple semirings. III. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 2, pp. 31-46
• Kepka, Tomáš; Němec, Petr: In memory of Jaroslav Ježek. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 2, pp. 3-4
• Kepka, Tomáš; Němec, Petr: (Pre)order preserving additive homomorphisms of (pre)ordered commutative semigroups into real numbers. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 1, pp. 3-32
• Gagola, Stephen III,; Kepka, Tomáš: Transitive closures of binary relations. IV. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 53 (2012), issue 2, pp. 47-60
• Ježek, Jaroslav; Kepka, Tomáš; Němec, Petr: Commutative semigroups that are simple over thein endomorphism semirings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 52 (2011), issue 2, pp. 37-50
• Ježek, Jaroslav; Kepka, Tomáš; Němec, Petr: Commutative semigroups with almost transitive endomorphism semirings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 52 (2011), issue 2, pp. 29-32
• El Bashir, Robert; Kepka, Tomáš; Žemlička, Jan: Dually steady rings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 52 (2011), issue 2, pp. 89-95
• Flaška, Václav; Kepka, Tomáš; Korteleinen, Juha: On separating sets of words. V. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 52 (2011), issue 2, pp. 51-59
• Ježek, Jaroslav; Kepka, Tomáš; Němec, Petr: One element extensions of commutative semigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 52 (2011), issue 2, pp. 33-35
• Kala, Vítězslav; Kepka, Tomáš: Commutative parasemifields finitely generated as semirings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 51 (2010), issue 1, pp. 49-56
• Kepka, Tomáš; Kinyon, Michael K.; Phillips, J. D.: F-quasigroups isotopic to groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 51 (2010), issue 2, pp. 267-277
• Ježek, Jaroslav; Kepka, Tomáš: Finitely generated commutative division semirings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 51 (2010), issue 1, pp. 3-27
• Kala, Vítězslav; Kepka, Tomáš; Němec, Petr: Norms on semirings. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 51 (2010), issue 1, pp. 29-48
• Ježek, J.; Kepka, Tomáš: A note on uniserial loops. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 51 (2010), issue 2, pp. 263-265
• Flaška, Václav; Kepka, Tomáš; Kortelainen, Juha: On separating sets of words. III. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 51 (2010), issue 1, pp. 57-64
• Flaška, Václav; Kepka, Tomáš; Kortelainen, Juha: On separating sets of words. IV. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 51 (2010), issue 1, pp. 65-71
• Kala, Vítězslav; Kepka, Tomáš; Korbelář, Miroslav: Notes on commutative parasemifields. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 50 (2009), issue 4, pp. 521-533
• Flaška, Václav; Kepka, Tomáš; Kortelainen, Juha: On separating sets of words. II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 50 (2009), issue 1, pp. 15-28
• Al-Zoubi, Khaldoun; Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. III. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 50 (2009), issue 1, pp. 3-13
• Ježek, Jaroslav; Kepka, Tomáš: The semiring of 1-preserving endomorphisms of a semilattice. (English). Czechoslovak Mathematical Journal, vol. 59 (2009), issue 4, pp. 999-1003
• Kepka, Tomáš; Korbelář, Miroslav: Various examples of parasemifields. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 50 (2009), issue 1, pp. 61-72
• Kala, V.; Kepka, Tomáš; Phillips, J. D.: Various subsemirings of the field $\Bbb Q$ of rational numbers. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 50 (2009), issue 1, pp. 29-59
• Kepka, Tomáš; Němec, Petr: Commutative radical rings. II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 49 (2008), issue 1, pp. 53-73
• Ježek, Jaroslav; Kepka, Tomáš; Němec, Petr: Commutative semigroups that are nil of index 2 and have no irreducible elements. (English). Mathematica Bohemica, vol. 133 (2008), issue 1, pp. 1-7
• Bashir, Robert El; Kepka, Tomáš: Commutative zeropotent semigroups with few invariant congruences. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 4, pp. 865-885
• Kepka, Tomáš; Kinyon, Michael K.; Phillips, J. D.: F-quasigroups and generalized modules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 49 (2008), issue 2, pp. 249-257
• Kala, Vítězslav; Kepka, Tomáš: A note on finitely generated ideal-simple commutative semirings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 49 (2008), issue 1, pp. 1-9
• Flaška, Václav; Kepka, Tomáš; Kortelainen, Juha: On separating sets of words. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 49 (2008), issue 1, pp. 33-51
• Al-Zoubi, Khaldoun; Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 49 (2008), issue 1, pp. 3-16
• Al-Zoubi, Khaldoun; Kepka, Tomáš; Němec, Petr: Quasitrivial semimodules. II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 49 (2008), issue 1, pp. 17-24
• Flaška, Václav; Ježek, Jaroslav; Kepka, Tomáš: Transitive closures of binary relations. III. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 49 (2008), issue 1, pp. 25-31
• Kepka, Tomáš; Němec, Petr: Commutative radical rings. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 48 (2007), issue 1, pp. 11-41
• Flaška, Václav; Ježek, Jaroslav; Kepka, Tomáš: Transitive closures of binary relations II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 48 (2007), issue 1, pp. 71-80
• Flaška, Václav; Ježek, Jaroslav; Kepka, Tomáš; Kortelainen, Juha: Transitive closures of binary relations. I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 48 (2007), issue 1, pp. 55-69
• Flaška, Václav; Jančařík, Antonín; Kala, Vítězslav; Kepka, Tomáš: Trees in commtative nil-semigroups of index two. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 48 (2007), issue 1, pp. 81-101
• Flaška, Václav; Kepka, Tomáš: Commutative zeropotent semigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 47 (2006), issue 1, pp. 3-14
• Ježek, Jaroslav; Kepka, Tomáš: Selfdistributive groupoids. Part D1: Left distributive semigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 47 (2006), issue 1, pp. 15-56
• Flaška, Václav; Kepka, Tomáš; Šaroch, Jan: Bi-ideal-simple semirings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 46 (2005), issue 3, pp. 391-397
• 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
• Jančařík, Antonín; Kepka, Tomáš; Vítek, Milan: Multiplication groups of quasigroups and loops IV. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 46 (2005), issue 1, pp. 77-100
• Kechlibar, Marian; Kepka, Tomáš; Kortelainen, Juha: A note on finitely generated commutative rings. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 46 (2005), issue 1, pp. 101-105
• Ghoneim, S.; Kechlibar, M.; Kepka, Tomáš: Ordinary selfdistributive rings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 46 (2005), issue 2, pp. 293-299
• Csörgö, Piroska; Kepka, Tomáš: On loops whose inner permutations commute. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 2, pp. 213-221
• Kepka, Tomáš; Příhoda, Pavel; Šťovíček, Jan: Unions of subquasigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 45 (2004), issue 1, pp. 43-54
• Cho, Jung R.; Kepka, Tomáš: Infinite simple zeropotent paramedial groupoids. (English). Czechoslovak Mathematical Journal, vol. 53 (2003), issue 4, pp. 769-775
• Bashir, Robert El; Kepka, Tomáš; Němec, Petr: Modules commuting (via Hom) with some colimits. (English). Czechoslovak Mathematical Journal, vol. 53 (2003), issue 4, pp. 891-905
• Kepka, Tomáš; Němec, Petr: Selfdistributive groupoids. Part A1. Non-indempotent left distributive groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 44 (2003), issue 1, pp. 3-94
• Cho, Jung R.; Kepka, Tomáš: Finite simple zeropotent paramedial groupoids. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 1, pp. 41-53
• Kepka, Tomáš: Quasigroups of fractions. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 42 (2001), issue 1, pp. 3-81
• Kepka, Tomáš; Němec, Petr: Connected transversals -- the Zassenhaus case. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 41 (2000), issue 2, pp. 299-300
• Ježek, Jaroslav; Kepka, Tomáš: The equational theory of paramedial cancellation groupoids. (English). Czechoslovak Mathematical Journal, vol. 50 (2000), issue 1, pp. 25-34
• Bashir, Robert El; Ježek, Jaroslav; Kepka, Tomáš: Simple zeropotent paramedial groupoids are balanced. (English). Czechoslovak Mathematical Journal, vol. 50 (2000), issue 2, pp. 397-399
• 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
• Kepka, Tomáš; Phillips, Jon D.: Connected transversals to subnormal subgroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 38 (1997), issue 2, pp. 223-230
• Ježek, Jaroslav; Kepka, Tomáš: Selfdistributive groupoids of small orders. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 3, pp. 463-468
• Ježek, Jaroslav; Kepka, Tomáš: Bijective reflexions and coreflexions of commutative unars. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 37 (1996), issue 1, pp. 31-40
• Ježek, Jaroslav; Kepka, Tomáš: Groupoids and the associative law XII. (Representable cardinal functions). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 37 (1996), issue 1, pp. 41-62
• El Bashir, Robert; Kepka, Tomáš: Notes on slender prime rings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 37 (1996), issue 2, pp. 419-422
• Kepka, Tomáš; Němec, Petr: Simple balanced groupoids. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 35 (1996), issue 1, pp. 53-60
• Kepka, Tomáš: $\bigcap$-compact modules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 36 (1995), issue 3, pp. 423-426
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law III. (Szász-Hájek groupoids). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 36 (1995), issue 1, pp. 17-30
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law V. (Szász-Hájek groupoids fo type (A, A, B)). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 36 (1995), issue 1, pp. 31-44
• Drápal, Aleš; Kepka, Tomáš; Musílek, Michal: Group conjugation has non-trivial LD-identities. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 2, pp. 219-222
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law IV. (Szász-Hájek Groupoids of Type (A, B, A)). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 35 (1994), issue 1, pp. 31-42
• Kepka, Tomáš: Ideals in selfdistributive groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 1, pp. 187-191
• Drápal, Aleš; Kepka, Tomáš; Maršálek, Petr: Multiplication groups of quasigroups and loops II. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 35 (1994), issue 1, pp. 9-29
• Kepka, Tomáš: Non-idempotent left symmetric left distributive groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 1, pp. 181-186
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law II. (Groupoids with small semigroup distance). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 34 (1993), issue 1, pp. 67-83
• Drápal, Aleš; Kepka, Tomáš: Multiplication groups of quasigroups and loops I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 34 (1993), issue 1, pp. 85-99
• Kepka, Tomáš: Semirings whose additive endomorphisms are multiplicative. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 2, pp. 213-219
• Kepka, Tomáš; Ščukin, K. K.: Simple quasigroups whose inner permutations commute. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 2, pp. 223-227
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law I. (Associative triples). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 33 (1992), issue 1, pp. 69-86
• Kepka, Tomáš: $m$-medial $n$-quasigroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 32 (1991), issue 1, pp. 9-14
• Drápal, Aleš; Kepka, Tomáš: Loops whose translations generate the alternating group. (English). Czechoslovak Mathematical Journal, vol. 40 (1990), issue 1, pp. 116-124
• Ježek, Jaroslav; Kepka, Tomáš: Notes on the number of associative triples. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 31 (1990), issue 1, pp. 15-19
• Kepka, Tomáš; Němec, Petr: Trimedial quasigroups and generalized modules I. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 31 (1990), issue 1, pp. 3-14
• Drápal, Aleš; Kepka, Tomáš: On a distance of groups and Latin squares. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 30 (1989), issue 4, pp. 621-626
• Ježek, Jaroslav; Kepka, Tomáš: Varieties of groupoids determined by short linear identities. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 4, pp. 644-658
• Drápal, Aleš; Kepka, Tomáš: Parity of orthogonal automorphisms. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 28 (1987), issue 2, pp. 251-259
• Drápal, Aleš; Kepka, Tomáš: Parity of orthogonal permutations. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 28 (1987), issue 3, pp. 427-432
• Kepka, Tomáš: A construction of commutative Moufang loops and quasimodules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 3, pp. 499-518
• Drápal, Aleš; Kepka, Tomáš: Group distances of Latin squares. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 26 (1985), issue 2, pp. 275-283
• Kepka, Tomáš: A construction of Bruck loops. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 25 (1984), issue 4, pp. 591-595
• Kepka, Tomáš; Kratochvíl, Jan: Graphs and associative triples in quasitrivial groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 25 (1984), issue 4, pp. 679-687
• Ježek, Jaroslav; Kepka, Tomáš: Modular groupoids. (English). Czechoslovak Mathematical Journal, vol. 34 (1984), issue 3, pp. 477-487
• Ježek, Jaroslav; Kepka, Tomáš: Permutable groupoids. (English). Czechoslovak Mathematical Journal, vol. 34 (1984), issue 3, pp. 396-410
• Kepka, Tomáš; Němec, Petr: Torsion quasimodules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 25 (1984), issue 4, pp. 699-717
• Kepka, Tomáš: Distributive groupoids and preradicals. I. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 1, pp. 183-197
• Kepka, Tomáš: Distributive groupoids and preradicals. II. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 2, pp. 199-209
• Ježek, Jaroslav; Kepka, Tomáš: Notes on distributive groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 2, pp. 237-249
• Ježek, Jaroslav; Kepka, Tomáš: Torsion groupoids. (English). Czechoslovak Mathematical Journal, vol. 33 (1983), issue 1, pp. 7-26
• Kepka, Tomáš; Němec, Petr: Commutative Moufang loops and distributive groupoids of small orders. (English). Czechoslovak Mathematical Journal, vol. 31 (1981), issue 4, pp. 633-669
• Ježek, Jaroslav; Kepka, Tomáš: Free entropic groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 22 (1981), issue 2, pp. 223-233
• Kepka, Tomáš: A note on subdirectly irreducible groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 1, pp. 25-28
• Kepka, Tomáš: A note on the number of associative triples in finite commutative Moufang loops. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 22 (1981), issue 4, pp. 745-753
• Drápal, Aleš; Kepka, Tomáš: A note on the number of associative triples in quasigroups isotopic to groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 22 (1981), issue 4, pp. 735-743
• Kepka, Tomáš: Notes on associative triples of elements in commutative groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 2, pp. 39-47
• Kepka, Tomáš: Notes on left distributive groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 2, pp. 23-37
• Kepka, Tomáš: On a class of groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 1, pp. 29-49
• Kepka, Tomáš: On a class of subdirectly irreducible groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 1, pp. 17-24
• Kepka, Tomáš: Quasitrivial groupoids and balanced identities. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 22 (1981), issue 2, pp. 49-64
• Ježek, Jaroslav; Kepka, Tomáš: Semigroup representations of medial groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 22 (1981), issue 3, pp. 513-524
• Kepka, Tomáš: Commutative Moufang loops and distributive Steiner quasigroups nilpotent of class 3. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 2, pp. 355-370
• Kepka, Tomáš: A note on associative triples of elements in cancellation groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 3, pp. 479-487
• Kepka, Tomáš; Němec, Petr: Trilinear constructions of quasimodules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 2, pp. 341-354
• Kepka, Tomáš: $F$-quasigroups isotopic to Moufang loops. (English). Czechoslovak Mathematical Journal, vol. 29 (1979), issue 1, pp. 62-83
• Kepka, Tomáš: Medial division groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 20 (1979), issue 1, pp. 41-60
• Kepka, Tomáš: Notes on quasimodules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 20 (1979), issue 2, pp. 229-247
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Pseudoprojective modules. (English). Mathematica Slovaca, vol. 29 (1979), issue 2, pp. 107-115
• Kepka, Tomáš; Němec, P.: Quasigroups whose regular mappings are automorphisms. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 20 (1979), issue 1, pp. 61-71
• Kepka, Tomáš; Němec, Petr: Quasimodules generated by three elements. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 20 (1979), issue 2, pp. 249-266
• Ježek, Jaroslav; Kepka, Tomáš: Varieties of quasigroups determined by short strictly balanced identities. (English). Czechoslovak Mathematical Journal, vol. 29 (1979), issue 1, pp. 84-96
• Ježek, J.; Kepka, Tomáš; Němec, P.: The category of totally symmetric quasigroups is binding. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 19 (1978), issue 2, pp. 63-64
• Kepka, Tomáš: Commutative distributive groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 19 (1978), issue 2, pp. 45-58
• Kepka, Tomáš: Distributive Steiner quasigroups of order $3^5$. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 19 (1978), issue 2, pp. 389-401
• Kepka, Tomáš: A note on simple quasigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 19 (1978), issue 2, pp. 59-60
• Kepka, Tomáš: A note on WA-quasigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 19 (1978), issue 2, pp. 61-62
• Ježek, J.; Kepka, Tomáš: Quasetrivial and nearly quasitrivial distributive goupoids and semigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 19 (1978), issue 2, pp. 25-44
• Kepka, Tomáš: Structure of weakly abelian quasigroups. (English). Czechoslovak Mathematical Journal, vol. 28 (1978), issue 2, pp. 181-188
• Kepka, Tomáš: Epimorphisms in some groupoid varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 18 (1977), issue 2, pp. 265-279
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Generation of preradicals. (English). Czechoslovak Mathematical Journal, vol. 27 (1977), issue 1, pp. 155-166
• Kepka, Tomáš: On a class of non-associative rings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 18 (1977), issue 3, pp. 531-540
• Kepka, Tomáš; Němec, P.: Unipotent quasigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 18 (1977), issue 2, pp. 13-22
• Ježek, Jaroslav; Kepka, Tomáš: Varieties of abelian quasigroups. (English). Czechoslovak Mathematical Journal, vol. 27 (1977), issue 3, pp. 473-503
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Centrally splitting radicals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 1, pp. 31-47
• Ježek, J.; Kepka, Tomáš: Free commutative idempotent abelian groupoids and quasigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 17 (1976), issue 2, pp. 13-19
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Hereditary and cohereditary preradicals. (English). Czechoslovak Mathematical Journal, vol. 26 (1976), issue 2, pp. 192-206
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: A note on test modules. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 2, pp. 345-355
• Kepka, Tomáš: Structure of triabelian quasigroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 2, pp. 229-240
• Ježek, J.; Kepka, Tomáš: Extensive varieties. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 16 (1975), issue 2, pp. 79-87
• Kepka, Tomáš: $\Lambda$, $R$-transitive groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 16 (1975), issue 2, pp. 71-77
• Kepka, Tomáš: Normal congruence relations on division groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 16 (1975), issue 2, pp. 89-95
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Preradicals and change of rings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 2, pp. 201-217
• Kepka, Tomáš: Quasigroups which satisfy certain generalized forms of the Abelian identity. (English). Časopis pro pěstování matematiky, vol. 100 (1975), issue 1, pp. 46-60
• Ježek, Jaroslav; Kepka, Tomáš: Quasigroups, isotopic to a group. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 1, pp. 59-76
• Ježek, Jaroslav; Kepka, Tomáš: Semigroup representations of commutative idempotent Abelian groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 3, pp. 487-500
• Bican, L.; Jambor, P.; Kepka, Tomáš; Němec, P.: Stable and costable preradicals. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 16 (1975), issue 2, pp. 63-69
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Composition of preradicals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 3, pp. 393-405
• Kepka, Tomáš: Costable rings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 2, pp. 245-257
• Kepka, Tomáš: Notes on radical filters of ideals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 1, pp. 149-159
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Preradicals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 1, pp. 75-83
• Kepka, Tomáš: On one class of purities. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 14 (1973), issue 1, pp. 139-154
• Kepka, Tomáš: A note on compatible reflexive relations on quasigroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 3, pp. 593-598
• Kepka, Tomáš: On one class of quasigroups. (English). Časopis pro pěstování matematiky, vol. 97 (1972), issue 4, pp. 347-356
• Kepka, Tomáš: The totally simple quasigroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 3, pp. 577-582
• Kepka, Tomáš: Regular mappings of groupoids. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 12 (1971), issue 1, pp. 25-37
• Němec, P.; Kepka, Tomáš: T-quasigroups (Part I.). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 12 (1971), issue 1, pp. 39-49
• Kepka, Tomáš; Němec, P.: T-quasigroups (Part II.). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 12 (1971), issue 2, pp. 31-49