Representing subgroups of finitely presented groups by quotient subgroups.
Hulpke, Alexander (2001)
Experimental Mathematics
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Hulpke, Alexander (2001)
Experimental Mathematics
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Lempken, Wolfgang, van Trung, Tran (2005)
Experimental Mathematics
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Dmitrijs Sakovics (2012)
Open Mathematics
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A singularity is said to be weakly-exceptional if it has a unique purely log terminal blow-up. In dimension 2, V. Shokurov proved that weakly-exceptional quotient singularities are exactly those of types D n, E 6, E 7, E 8. This paper classifies the weakly-exceptional quotient singularities in dimensions 3 and 4.
M. Chiara Tamburini, Paola Zucca (2000)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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We show that the special linear group , over the integers, is not -generated. This gives a negative answer to a question of M. Conder.
How, Guan Aun (2003)
Bulletin of the Malaysian Mathematical Sciences Society. Second Series
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Masahito Toda (2004)
Open Mathematics
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The paper studies the first homology of finite regular branched coverings of a universal Borromean orbifold called B 4,4,4ℍ3. We investigate the irreducible components of the first homology as a representation space of the finite covering transformation group G. This gives information on the first betti number of finite coverings of general 3-manifolds by the universality of B 4,4,4. The main result of the paper is a criterion in terms of the irreducible character whether a given irreducible...
Alla Detinko, Dane Flannery (2008)
Open Mathematics
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We classify the maximal irreducible periodic subgroups of PGL(q, ), where is a field of positive characteristic p transcendental over its prime subfield, q = p is prime, and × has an element of order q. That is, we construct a list of irreducible subgroups G of GL(q, ) containing the centre ×1q of GL(q, ), such that G/ ×1q is a maximal periodic subgroup of PGL(q, ), and if H is another group of this kind then H is GL(q, )-conjugate to a group in the list. We give criteria...
Sayed, Mohamed (2005)
International Journal of Mathematics and Mathematical Sciences
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Button, J. O. (2002)
The New York Journal of Mathematics [electronic only]
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Felix Leinen (1994)
Rendiconti del Seminario Matematico della Università di Padova
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