Author: Šulka, Robert
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Šulka, Robert:
Nilpotency in semigroups and sublattices of their Booleans.
(English).
Mathematica Slovaca,
vol. 37
(1987),
issue 2,
pp. 147-158
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Šulka, Robert:
On three lattices that belong to every semigroup.
(English).
Mathematica Slovaca,
vol. 34
(1984),
issue 2,
pp. 217-228
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Andréka, Hajnal; Németi, István; Šulka, Robert:
Remark on one-sided $A$-ideals of semigroups.
(English).
Mathematica Slovaca,
vol. 33
(1983),
issue 2,
pp. 231-235
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Šulka, Robert:
The minimal right $A$-ideal of the free semigroup on a countable set.
(English).
Mathematica Slovaca,
vol. 32
(1982),
issue 3,
pp. 301-304
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Šulka, Robert:
Remark on partially ordered sets, universal algebras and semigroups.
(English).
Mathematica Slovaca,
vol. 29
(1979),
issue 2,
pp. 131-139
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Šulka, Robert:
The Maximal Semilattice Decomposition of a Semigroup.
(English).
Matematický časopis,
vol. 21
(1971),
issue 4,
pp. 269-276
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Šulka, Robert:
The Maximal Semilattice Decomposition of a Semigroup, Radicals and Nilpotency.
(English).
Matematický časopis,
vol. 20
(1970),
issue 3,
pp. 172-180
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Šulka, Robert:
Note on the Nilpotency in Compact $H$-Semigroups.
(English).
Matematický časopis,
vol. 18
(1968),
issue 2,
pp. 105-112
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Šulka, Robert:
Note on the Ševrin radical in semigroups.
(English).
Matematický časopis,
vol. 18
(1968),
issue 1,
pp. 57-58
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Šulka, Robert:
On the Nilpotency in Semigroups.
(English).
Matematický časopis,
vol. 18
(1968),
issue 2,
pp. 148-157
-
Šulka, Robert:
Радикалы и топология в полугруппах.
(Russian) [Radicals and Topology in Semigroups].
Matematicko-fyzikálny časopis,
vol. 15
(1965),
issue 1,
pp. 3-14
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Šulka, Robert:
Заметка о радикалах в факторполугруппах.
(Russian) [A Note on Radicals in Factor Semigroups].
Matematicko-fyzikálny časopis,
vol. 14
(1964),
issue 4,
pp. 297-300
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Šulka, Robert:
Poznámka o faktorových pologrupách danej pologrupy.
(Slovak) [A Note on Factor-Semigroups of a Semigroup].
Matematicko-fyzikálny časopis,
vol. 13
(1963),
issue 3,
pp. 205-208
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Šulka, Robert:
О нилььпотентных элементах, идеалах и радикалах полугруппы.
(Russian) [On Nilpotent Elements, Ideals and Radicals of a Semigroup].
Matematicko-fyzikálny časopis,
vol. 13
(1963),
issue 3,
pp. 209-222
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Šulka, Robert:
O maximálnom spoločnom zjemnení a minimálnom spoločnom zákryte dvoch topologických faktoroidov.
(Slovak) [On the Maximal Common Refinement and the Minimal Common Covering of Two Topological Factoroids].
Matematicko-fyzikálny časopis,
vol. 8
(1958),
issue 1,
pp. 20-26
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Šulka, Robert:
O izomorfiszme topologických grupoidov.
(Slovak) [On the Isomorphism of Topological Groupoids].
Matematicko-fyzikálny časopis,
vol. 7
(1957),
issue 3,
pp. 143-157
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Šulka, Robert:
Poznámka o izomorfizme topologických faktoroidov.
(Slovak) [Remark on Isomorphism of Topological Factoroids].
Matematicko-fyzikálny časopis,
vol. 6
(1956),
issue 3,
pp. 137-142
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Šulka, Robert:
Topologické grupoidy.
(Slovak) [Topological Groupoids].
Matematicko-fyzikálny časopis,
vol. 5
(1955),
issue 1,
pp. 10-21
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