Search results for "wreath"

showing 5 items of 5 documents

Homomorphs and wreath product extensions

1982

A homomorph is a class of (finite soluble) groups closed under the operation Q of taking epimorphic images. (All groups considered in this paper are finite and soluble.) Among those types of homomorphs that have found particular interest in the theory of finite soluble groups are formations and Schunck classes; the reader is referred to (2), § 2, for a definition of those classes. In the present paper we are interested in homomorphs satisfying the following additional closure property:(W0) if A is abelian with elementary Sylow subgroups, then each wreath product A G (with respect to an arbitrary permutation representation of G) with G ∊ is contained in .

Class (set theory)PermutationPure mathematicsWreath productGeneral MathematicsSylow theoremsRepresentation (systemics)Abelian groupMathematicsMathematical Proceedings of the Cambridge Philosophical Society
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Automorphisms of the integral group rings of some wreath products

1991

CombinatoricsAlgebra and Number TheoryWreath productAutomorphismMathematicsGroup ringCommunications in Algebra
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Involution codimensions and trace codimensions of matrices are asymptotically equal

1996

We calculate the asymptotic growth oft n (M p (F),*) andc n (M p (F),*), the trace and ordinary *-codimensions ofp×p matrices with involution. To do this we first calculate the asymptotic growth oft n and then show thatc n ⋍t n .

CombinatoricsInvolution (mathematics)Wreath productGeneral MathematicsMathematicsIsrael Journal of Mathematics
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Finitary Representations and Images of Transitive Finitary Permutation Groups

1999

Abstract We characterize the point stabilizers and kernels of finitary permutation representations of infinite transitive groups of finitary permutations. Moreover, the number of such representations is determined.

Discrete mathematicshomomorphic imagesMathematics::CombinatoricsAlgebra and Number Theorypermutation groupsfinitary groupsBit-reversal permutationGeneralized permutation matrixPermutation groupCyclic permutationCombinatoricsMathematics::LogicPermutationwreath productsWreath productMathematics::Category TheoryComputer Science::Logic in Computer ScienceFinitaryPermutation graphMathematicsJournal of Algebra
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Dożynki w Polsce. Od obrzędu do widowiska

2017

Today the traditional beliefs, customs and rites relating to the harvest time are very limited as their contemporary functions and dimension have changed. The authoress is interested in the transformation process of a harvest festival that is typical of the old rural communities. The harvest festival still crowns the labours of farming and is a form of solemn thanksgiving for harvested crops but today's celebration is not accompanied with any magical practices that would bring a good harvest next year. Ritual songs are becoming obsolete and the harvesting women, if any, no longer need any orations addressed to a landlord. The customs of baking bread and making crown-shaped wreaths have surv…

feastspectacleharvest festivalritebreadwreathcrown-shaped wreathEtnologické rozpravy / Ethnological Disputes
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