Found 65 Documents (Results 1–65)
On Graev’s theorem for free products of Hausdorff topological groups. (English) Zbl 1484.22002
Reviewer: Mihail I. Ursul (Oradea)
Some operators that preserve the locality of a pseudovariety of semigroups. (English) Zbl 1278.20075
Reviewer: Peter R. Jones (Milwaukee)
On the power pseudovariety \(\mathbf{PCS}\). (English) Zbl 1306.20058
Reviewer: Mikhail Volkov (Ekaterinburg)
An upper bound for the power pseudovariety \(\mathbf{PCS}\). (English) Zbl 1255.20051
Reviewer: Mikhail Volkov (Ekaterinburg)
On iterated Mal’cev products with a pseudovariety of groups. (English) Zbl 1244.20052
Reviewer: Mikhail Volkov (Ekaterinburg)
Characterization of group radicals with an application to Mal’cev products. (English) Zbl 1250.20046
Reviewer: Mikhail Volkov (Ekaterinburg)
Two kinds of idempotent semirings with identity element. (Chinese. English summary) Zbl 1199.16102
The structure of the class of idempotent semiring. (Chinese. English summary) Zbl 1174.16327
MSC:
16Y60
On residual finiteness of graphs of nilpotent groups. (English) Zbl 1062.20027
Reviewer: Alexander Ivanovich Budkin (Barnaul)
Finite semigroups: an introduction to a unified theory of pseudovarieties. (English) Zbl 1033.20067
Gomes, Gracinda M. S. (ed.) et al., Semigroups, algorithms, automata and languages. Proceedings of workshops held at the International Centre of Mathematics, CIM, Coimbra, Portugal, May, June and July 2001. Singapore: World Scientific (ISBN 981-238-099-X/hbk). 3-64 (2002).
Reviewer: Mikhail Volkov (Ekaterinburg)
A finitely generated variety of combinatorial inverse semigroups having uncountably many subvarieties. (English) Zbl 1017.20049
Reviewer: Leonid Matveevich Martynov (Omsk)
\(\mathcal D\)-subvarieties of the variety of idempotent semirings. (English) Zbl 1004.16050
Reviewer: U.Hebisch (Freiberg)
Some pseudovariety joins involving locally trivial semigroups. (English) Zbl 0994.20044
Reviewer: Karl Auinger (Wien)
Closed subgroups in pro-\(\mathbf V\) topologies and the extension problem for inverse automata. (English) Zbl 1027.20036
A conjecture on the concatenation product. (English) Zbl 1011.20054
Reviewer: Jorge Almeida (Porto)
A note on the equation \(\mathbf{PH}={\mathbf J}*{\mathbf H}\). (English) Zbl 1020.20036
Reviewer: Leonid Matveevich Martynov (Omsk)
MSC:
20M07
Finite state automata: a geometric approach. (English) Zbl 0980.20067
Reviewer: Mikhail Volkov (Ekaterinburg)
Finite aperiodic semigroups with commuting idempotents and generalizations. (English) Zbl 0959.20051
Reviewer: Jorge Almeida (Porto)
A class of idempotent semirings. (English) Zbl 0959.16028
Reviewer: Bedřich Pondělíček (Praha)
Completely regular semigroups. (English) Zbl 0967.20034
Canadian Mathematical Society Series of Monographs and Advanced Texts. 23. Chichester: Wiley. x, 481 p. (1999).
Reviewer: F.J.Pastijn (Milwaukee)
Baer sums and fibered aspects of Mal’cev operations. (English) Zbl 0988.18006
Reviewer: Peter T.Johnstone (Cambridge)
On existence varieties of \(E\)-solid semigroups. (English) Zbl 0931.20049
Reviewer: K.Auinger (Wien)
Operators on the lattice of pseudovarieties of finite semigroups. (English) Zbl 0913.20038
Reviewer: K.Auinger (Wien)
Irreducibility of certain pseudovarieties. (English) Zbl 0904.20042
Reviewer: M.V.Volkov (Ekaterinburg)
Congruences on the lattice of pseudovarieties of finite semigroups. (English) Zbl 0885.20036
Reviewer: M.V.Volkov (Ekaterinburg)
Free profinite \(\mathcal R\)-trivial monoids. (English) Zbl 0892.20035
Reviewer: P.Weil (Paris)
On some existence varieties of locally orthodox semigroups. (English) Zbl 0872.20050
Reviewer: K.Auinger (Wien)
On Rhodes expansions of bands. (English) Zbl 0862.20045
Reviewer: K.Auinger (Wien)
Profinite semigroups, Mal’cev products, and identities. (English) Zbl 0857.20040
Reviewer: J.Almeida (Porto)
A result on the dot-depth hierarchy for inverse monoids. (English) Zbl 0917.20045
Almeida, Jorge (ed.) et al., Semigroups, automata and languages. Papers from the conference, Porto, Portugal, June 20–24, 1994. Singapore: World Scientific. 41-57 (1996).
Finite semigroups and recognizable languages: An introduction. (English) Zbl 0872.20053
Fountain, John (ed.), Semigroups, formal languages and groups. Proceedings of the NATO Advanced Study Institute, York, UK, August 7–21, 1993. Dordrecht: Kluwer Academic Publishers. NATO ASI Ser., Ser. C, Math. Phys. Sci. 466, 1-32 (1995).
Reviewer: J.Almeida (Porto)
Locality of DS and associated varieties. (English) Zbl 0844.20040
Reviewer: K.Auinger (Wien)
On existence varieties of orthodox semigroups. (English) Zbl 0828.20043
Reviewer: K.Auinger (Wien)
The join of the pseudovarieties of idempotent semigroups and locally trivial semigroups. (English) Zbl 0840.20063
Reviewer: J.Almeida (Porto)
Decomposition of Mal’cev-Neumann division algebras with involution. (English) Zbl 0812.16023
Reviewer: H.Dherte (Louvain)
Applications of \(CR\)-relational morphisms to products of varieties of completely regular semigroups. (English) Zbl 0900.20115
Ito, Masami (ed.) et al., Words, languages and combinatorics II. Proceedings of the 2nd international conference, Kyoto, Japan, August 25-28, 1992. Singapore: World Scientific. 498-511 (1994).
HNN-extensions of finitely presented soluble groups. (English) Zbl 0804.20019
Reviewer: S.Franciosi (Napoli)
Semigroups with idempotent stabilizers and applications to automata theory. (English) Zbl 0725.20043
Reviewer: P.Weil (Paris)
Free bands of abelian groups. (English) Zbl 0713.20053
Reviewer: F.J.Pastijn
The Rhodes expansion and free objects in varieties of completely regular semigroups. (English) Zbl 0722.20037
Reviewer: P.R.Jones (Milwaukee)
The lattice of completely regular semigroup varieties. (English) Zbl 0706.20042
Reviewer: P.R.Jones
Polycyclic groups and topological groups. (English) Zbl 0705.20032
Group theory, Proc. 2nd Int. Conf., Bressanone/Italy 1989, Suppl. Rend. Circ. Mat. Palermo, II. Ser. 23, 63-71 (1990).
Reviewer: J.R.J.Groves
Gluings of modular lattices. (English) Zbl 0669.06007
Reviewer: D.Busneag
On the groupoid of varieties of completely simple semigroups. (English. Russian original) Zbl 0668.20047
Sov. Math. 32, No. 10, 1-12 (1988) ; translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1988, No. 10(317), 5-11 (1988).
Reviewer: L.M.Martynov
Certain characterizations of varieties of bands. (English) Zbl 0661.20038
Reviewer: L.Martynov
On embedding of group rings of residually torsion free nilpotent groups into skew fields. (English) Zbl 0615.16007
Reviewer: B.Hartley
Mal’cev products of varieties of completely regular semigroups. (English) Zbl 0613.20038
Reviewer: L.Martynov
On the product of formations of algebraic systems. (Russian) Zbl 0573.08007
Reviewer: J.Ježek
The lattice of interpretability types of varieties. (English) Zbl 0559.08003
Mem. Am. Math. Soc. 305, 125 p. (1984).
Reviewer: H.-P.Gumm
Extensions of algebraic systems. (English) Zbl 0537.08005
Reviewer: G.I.Zhitomirskij
A survey of products of lattice varieties. (English) Zbl 0522.06007
Contributions to lattice theory, Szeged/Hung. 1980, Colloq. Math. Soc. Janos Bolyai 33, 457-472 (1983).
On the multiplication of prevarieties of lattices. (Russian) Zbl 0498.06003
Issled. Sovrem. Algebre, Mat. Zap. 12, No. 3, 53-74 (1981).
A course in universal algebra. (English) Zbl 0478.08001
Graduate Texts in Mathematics, Vol. 78. New York - Heidelberg Berlin: Springer-Verlag. XVI, 276 p. DM 72.00; $ 33.60 (1981).
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