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SM ISO690:2012 ARMANIOUS, Magdi, ELZAYAT, Enas-M.. Subdirectly irreducible sloops and SQS-skeins
. In: Quasigroups and Related Systems, 2007, vol. 15, nr. 2(18), pp. 233-250. ISSN 1561-2848. |
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Quasigroups and Related Systems | ||||||
Volumul 15, Numărul 2(18) / 2007 / ISSN 1561-2848 | ||||||
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Pag. 233-250 | ||||||
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Rezumat | ||||||
It was shown in [2] that there is 8 classes of nonsimple subdirectly irre-
ducible SQS-skeins of cardinality 32 (SK(32)s). Now, we present the same
classication for sloops of cardinality 32 (SL(32)s) and unify this classi-
cation for both SL(32)s and SK(32)s in one table. Next, some recur-
sive construction theorems for subdirectly irreducible SL(2n)s and SK(2n)s
which are not necessary to be nilpotent are given. Further, we construct
an SK(2n) with a derived SL(2n) such that SK(2n) and SL(2n) are subdi-
rectly irreducible and have the same congruence lattice. We also construct
an SK(2n) with a derived SL(2n) such that the congruence lattice of SK(2n)
is a proper sublattice of the congruence lattice of SL(2n).
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Cuvinte-cheie Steiner triple system, Steiner loops, Steiner quadruple system, SQS-skein |
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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Armanious, M.H.</dc:creator> <dc:creator>Elzayat, E.A.</dc:creator> <dc:date>2007-06-04</dc:date> <dc:description xml:lang='en'>It was shown in [2] that there is 8 classes of nonsimple subdirectly irre- ducible SQS-skeins of cardinality 32 (SK(32)s). Now, we present the same classication for sloops of cardinality 32 (SL(32)s) and unify this classi- cation for both SL(32)s and SK(32)s in one table. Next, some recur- sive construction theorems for subdirectly irreducible SL(2n)s and SK(2n)s which are not necessary to be nilpotent are given. Further, we construct an SK(2n) with a derived SL(2n) such that SK(2n) and SL(2n) are subdi- rectly irreducible and have the same congruence lattice. We also construct an SK(2n) with a derived SL(2n) such that the congruence lattice of SK(2n) is a proper sublattice of the congruence lattice of SL(2n). </dc:description> <dc:source>Quasigroups and Related Systems 18 (2) 233-250</dc:source> <dc:subject>Steiner triple system</dc:subject> <dc:subject>Steiner loops</dc:subject> <dc:subject>Steiner quadruple system</dc:subject> <dc:subject>SQS-skein</dc:subject> <dc:title>Subdirectly irreducible sloops and SQS-skeins </dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>